Don't really know if any of you would be interested, but since I was compiling the lists for myself, I thought I'd go ahead and share. These are (I think) all the ritual spells in the Player's Handbook. I don't have any of the other books yet. So if they have more that you'd like to share, please do so.
Unsurprisingly, wizard probably has the best list. But if you already have a wizard in the party, cleric, druid, and even bard aren't that bad. However, since you can only learn new ritual spells for your book from a written source, that means scrolls or wizard spellbooks. So it is probably much easier, quicker, and cheaper to fill your ritual book from the wizard list rather than any other.
[FONT=Calibri, sans-serif]Ritualcaster[/FONT]
[FONT=Calibri, sans-serif]Bard[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]ComprehendLanguages – yes please[/FONT]
[FONT=Calibri, sans-serif]DetectMagic – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]Identify– yes please[/FONT]
[FONT=Calibri, sans-serif]IllusoryScript – meh[/FONT]
[FONT=Calibri, sans-serif]SpeakWith Animals – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]UnseenServant – yes please[/FONT]
[FONT=Calibri, sans-serif]2[/FONT]
[FONT=Calibri, sans-serif]AnimalMessenger – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]LocateAnimals or Plants – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]MagicMouth – lots of fun[/FONT]
[FONT=Calibri, sans-serif]3[/FONT]
[FONT=Calibri, sans-serif]FeignDeath – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]Leomund’sTiny Hut – yes please[/FONT]
[FONT=Calibri, sans-serif]4+[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]Cleric[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]DetectMagic – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]DetectPoison and Disease – yes please[/FONT]
[FONT=Calibri, sans-serif]PurifyFood and Drink – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]2[/FONT]
[FONT=Calibri, sans-serif]Augury– useful in some situations[/FONT]
[FONT=Calibri, sans-serif]GentleRepose – useful in a highly lethal campaign[/FONT]
[FONT=Calibri, sans-serif]Silence– meh[/FONT]
[FONT=Calibri, sans-serif]3[/FONT]
[FONT=Calibri, sans-serif]FeignDeath – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]MeldInto Stone – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]WaterWalk – yes please[/FONT]
[FONT=Calibri, sans-serif]4[/FONT]
[FONT=Calibri, sans-serif]Divination– yes please[/FONT]
[FONT=Calibri, sans-serif]5[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]6[/FONT]
[FONT=Calibri, sans-serif]Forbiddance– useful in some situations[/FONT]
[FONT=Calibri, sans-serif]7[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]Druid[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]DetectMagic – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]DetectPoison and Disease – yes please[/FONT]
[FONT=Calibri, sans-serif]SpeakWith Animals – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]2[/FONT]
[FONT=Calibri, sans-serif]AnimalMessenger – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]BeastSense – maybe[/FONT]
[FONT=Calibri, sans-serif]LocateAnimals or Plants – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]3[/FONT]
[FONT=Calibri, sans-serif]FeignDeath – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]MeldInto Stone – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]WaterBreathing – yes please[/FONT]
[FONT=Calibri, sans-serif]WaterWalk – yes please[/FONT]
[FONT=Calibri, sans-serif]4[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]5[/FONT]
[FONT=Calibri, sans-serif]CommuneWith Nature – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]6+[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]Paladin[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]DetectMagic – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]DetectPoison and Disease – yes please[/FONT]
[FONT=Calibri, sans-serif]PurifyFood and Drink – yes please[/FONT]
[FONT=Calibri, sans-serif]2+[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]Ranger[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]Alarm– yes please[/FONT]
[FONT=Calibri, sans-serif]DetectMagic – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]DetectPoison and Disease – yes please[/FONT]
[FONT=Calibri, sans-serif]SpeakWith Animals[/FONT]
[FONT=Calibri, sans-serif]2[/FONT]
[FONT=Calibri, sans-serif]AnimalMessenger – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]BeastSense – maybe[/FONT]
[FONT=Calibri, sans-serif]LocateAnimals or Plants – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]Silence– meh[/FONT]
[FONT=Calibri, sans-serif]3[/FONT]
[FONT=Calibri, sans-serif]WaterBreathing – yes please[/FONT]
[FONT=Calibri, sans-serif]WaterWalk – yes please[/FONT]
[FONT=Calibri, sans-serif]4[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]5[/FONT]
[FONT=Calibri, sans-serif]CommuneWith Nature – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]Warlock[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]ComprehendLanguages – yes please[/FONT]
[FONT=Calibri, sans-serif]IllusoryScript – meh[/FONT]
[FONT=Calibri, sans-serif]UnseenServant – yes please[/FONT]
[FONT=Calibri, sans-serif]2-4[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]5[/FONT]
[FONT=Calibri, sans-serif]ContactOther Plane – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]6+[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]Wizardlist[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]Alarm– yes please[/FONT]
[FONT=Calibri, sans-serif]ComprehendLanguages – yes please[/FONT]
[FONT=Calibri, sans-serif]DetectMagic – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]FindFamiliar – yes please[/FONT]
[FONT=Calibri, sans-serif]Identify– yes please[/FONT]
[FONT=Calibri, sans-serif]IllusoryScript – meh[/FONT]
[FONT=Calibri, sans-serif]Tenser’sFloating Disk – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]UnseenServant – yes please[/FONT]
[FONT=Calibri, sans-serif]2[/FONT]
[FONT=Calibri, sans-serif]GentleRepose – useful in a highly lethal campaign[/FONT]
[FONT=Calibri, sans-serif]MagicMouth – lots of fun[/FONT]
[FONT=Calibri, sans-serif]3[/FONT]
[FONT=Calibri, sans-serif]FeignDeath – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]Leomund’sTiny Hut – yes please[/FONT]
[FONT=Calibri, sans-serif]PhantomSteed – yes please[/FONT]
[FONT=Calibri, sans-serif]WaterBreathing – yes please[/FONT]
[FONT=Calibri, sans-serif]4[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]5[/FONT]
[FONT=Calibri, sans-serif]ContactOther Plane – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]Rary’sTelepathic Bond – yes please[/FONT]
[FONT=Calibri, sans-serif]6[/FONT]
[FONT=Calibri, sans-serif]Dramij’sInstant Summons – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]7+[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
Unsurprisingly, wizard probably has the best list. But if you already have a wizard in the party, cleric, druid, and even bard aren't that bad. However, since you can only learn new ritual spells for your book from a written source, that means scrolls or wizard spellbooks. So it is probably much easier, quicker, and cheaper to fill your ritual book from the wizard list rather than any other.
[FONT=Calibri, sans-serif]Ritualcaster[/FONT]
[FONT=Calibri, sans-serif]Bard[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]ComprehendLanguages – yes please[/FONT]
[FONT=Calibri, sans-serif]DetectMagic – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]Identify– yes please[/FONT]
[FONT=Calibri, sans-serif]IllusoryScript – meh[/FONT]
[FONT=Calibri, sans-serif]SpeakWith Animals – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]UnseenServant – yes please[/FONT]
[FONT=Calibri, sans-serif]2[/FONT]
[FONT=Calibri, sans-serif]AnimalMessenger – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]LocateAnimals or Plants – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]MagicMouth – lots of fun[/FONT]
[FONT=Calibri, sans-serif]3[/FONT]
[FONT=Calibri, sans-serif]FeignDeath – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]Leomund’sTiny Hut – yes please[/FONT]
[FONT=Calibri, sans-serif]4+[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]Cleric[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]DetectMagic – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]DetectPoison and Disease – yes please[/FONT]
[FONT=Calibri, sans-serif]PurifyFood and Drink – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]2[/FONT]
[FONT=Calibri, sans-serif]Augury– useful in some situations[/FONT]
[FONT=Calibri, sans-serif]GentleRepose – useful in a highly lethal campaign[/FONT]
[FONT=Calibri, sans-serif]Silence– meh[/FONT]
[FONT=Calibri, sans-serif]3[/FONT]
[FONT=Calibri, sans-serif]FeignDeath – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]MeldInto Stone – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]WaterWalk – yes please[/FONT]
[FONT=Calibri, sans-serif]4[/FONT]
[FONT=Calibri, sans-serif]Divination– yes please[/FONT]
[FONT=Calibri, sans-serif]5[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]6[/FONT]
[FONT=Calibri, sans-serif]Forbiddance– useful in some situations[/FONT]
[FONT=Calibri, sans-serif]7[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]Druid[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]DetectMagic – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]DetectPoison and Disease – yes please[/FONT]
[FONT=Calibri, sans-serif]SpeakWith Animals – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]2[/FONT]
[FONT=Calibri, sans-serif]AnimalMessenger – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]BeastSense – maybe[/FONT]
[FONT=Calibri, sans-serif]LocateAnimals or Plants – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]3[/FONT]
[FONT=Calibri, sans-serif]FeignDeath – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]MeldInto Stone – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]WaterBreathing – yes please[/FONT]
[FONT=Calibri, sans-serif]WaterWalk – yes please[/FONT]
[FONT=Calibri, sans-serif]4[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]5[/FONT]
[FONT=Calibri, sans-serif]CommuneWith Nature – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]6+[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]Paladin[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]DetectMagic – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]DetectPoison and Disease – yes please[/FONT]
[FONT=Calibri, sans-serif]PurifyFood and Drink – yes please[/FONT]
[FONT=Calibri, sans-serif]2+[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]Ranger[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]Alarm– yes please[/FONT]
[FONT=Calibri, sans-serif]DetectMagic – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]DetectPoison and Disease – yes please[/FONT]
[FONT=Calibri, sans-serif]SpeakWith Animals[/FONT]
[FONT=Calibri, sans-serif]2[/FONT]
[FONT=Calibri, sans-serif]AnimalMessenger – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]BeastSense – maybe[/FONT]
[FONT=Calibri, sans-serif]LocateAnimals or Plants – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]Silence– meh[/FONT]
[FONT=Calibri, sans-serif]3[/FONT]
[FONT=Calibri, sans-serif]WaterBreathing – yes please[/FONT]
[FONT=Calibri, sans-serif]WaterWalk – yes please[/FONT]
[FONT=Calibri, sans-serif]4[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]5[/FONT]
[FONT=Calibri, sans-serif]CommuneWith Nature – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]Warlock[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]ComprehendLanguages – yes please[/FONT]
[FONT=Calibri, sans-serif]IllusoryScript – meh[/FONT]
[FONT=Calibri, sans-serif]UnseenServant – yes please[/FONT]
[FONT=Calibri, sans-serif]2-4[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]5[/FONT]
[FONT=Calibri, sans-serif]ContactOther Plane – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]6+[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]Wizardlist[/FONT]
[FONT=Calibri, sans-serif]1[/FONT]
[FONT=Calibri, sans-serif]Alarm– yes please[/FONT]
[FONT=Calibri, sans-serif]ComprehendLanguages – yes please[/FONT]
[FONT=Calibri, sans-serif]DetectMagic – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]FindFamiliar – yes please[/FONT]
[FONT=Calibri, sans-serif]Identify– yes please[/FONT]
[FONT=Calibri, sans-serif]IllusoryScript – meh[/FONT]
[FONT=Calibri, sans-serif]Tenser’sFloating Disk – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]UnseenServant – yes please[/FONT]
[FONT=Calibri, sans-serif]2[/FONT]
[FONT=Calibri, sans-serif]GentleRepose – useful in a highly lethal campaign[/FONT]
[FONT=Calibri, sans-serif]MagicMouth – lots of fun[/FONT]
[FONT=Calibri, sans-serif]3[/FONT]
[FONT=Calibri, sans-serif]FeignDeath – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]Leomund’sTiny Hut – yes please[/FONT]
[FONT=Calibri, sans-serif]PhantomSteed – yes please[/FONT]
[FONT=Calibri, sans-serif]WaterBreathing – yes please[/FONT]
[FONT=Calibri, sans-serif]4[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]
[FONT=Calibri, sans-serif]5[/FONT]
[FONT=Calibri, sans-serif]ContactOther Plane – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]Rary’sTelepathic Bond – yes please[/FONT]
[FONT=Calibri, sans-serif]6[/FONT]
[FONT=Calibri, sans-serif]Dramij’sInstant Summons – useful in some situations[/FONT]
[FONT=Calibri, sans-serif]7+[/FONT]
[FONT=Calibri, sans-serif]none[/FONT]