Eloquence Bard seems extremely good to me, because it effectively has "Reliable Talent" for Persuasion and Deception. At level 3. And that solves so many problems in so many situations. No more having a decent-but-imperfect RP and needing to roll Persuasion, with a massive bonus, then getting a 2 or whatever. Combine that with the ability to drop enemy saves with your Inspiration die, and you're going to be outstandingly effective with a lot of single-target spells (like our good friend Suggestion). In fact it competes hard with the excellent ability for people to retain Inspiration dice if they fail the roll anyway. Infectious Inspiration is also excellent.
They're not as well-rounded or optimization-friendly as Lore Bards, but they're very solid.
Oath of Glory on the other hand is staggeringly bad, mechanically. Like wow. I am genuinely impressed by how bad they are. Their aura is +10ft movement? And it's not even an aura until 18th level? And then it has a 10ft radius? Was this designed by Scrooge McDuck? Did the designer personally have to pay $100 for each foot or movement and radius this ability had or something? They are literally not capable of doing what the lore-text describes until L18, and then only with a tiny number of people (5 abreast, including them). Also it only works if you're last in initiative. That is grade-A terrible design on every level. This really feels like someone totally unnecessarily nerfed the hell out of this.
I dunno if it's quite the worst Paladin subclass, but it's up there.
Satyrs are the only race that isn't kind of a boring mess mechanically (and indeed verge on the OP thanks to straight-up magic resistance). Leonins have a pretty strong ability, but Centaurs and Minotaurs are unaltered from Ravnica, and are thus both terrible at what they're supposed to be good at, mythologically - Centaurs have to move 30' to use their ability - and it takes a Bonus Action even then, and yet they can't actually charge (because no-one in 5E can pretty much, without the Feat), so basically enemies need to be at least 30ft away, but less than 40ft away (because that's their move), in order to use a bonus ability to maybe gain a small amount of damage. Jeez. Minotaurs are similar - but least can make a horn attack charge, even if it inexplicably can't shove - the one thing you'd expect it to be able to do - that is instead on an ability they can only use if they DON'T charge (?!?!?!). Tritons remain dull/weak.
Monsters look good but haven't read that properly yet.
In terms of races and subclasses, Odyssey of the Dragonlords is straight-up better, I would note. Not only does Dragonlords have subclasses for all the classes, but they're straight-up better-designed, something I never thought I'd say comparing a 5E WotC book and a 5E 3PP book. The same is true of the races. Dragonlords has more new races - Sirens, Medusas and Dryads as well as Centaurs, Minotaurs and Satyrs, but their designs for those races are both more interesting, and better-balanced. I don't think we can get away with "well different approaches" either - two subclasses and one of them stinks? Two new races and one is dull-but-powerful and the other is just kind "eh". That's not great work WotC.
But I suspect monster-wise is where this book will shine.