Barbarian (Primal Champion) 17
Cleric (Divine Intervention Auto) 15
Druid (Archdruid) 5
Fighter (Third Extra Attack) 6
Paladin (Sacred Oath Feature/Varies) 14
Rogue (Stroke of Luck) 18
Wizard (Signature Spell) 19
Oh, but advancing as a fighter can give you an extra attack-ack-ack-ack-ack-ack
You ought to know by now [(you ought to know by now)]
Fighters always get that extra whack,
And that's what you get for level 20.
And if it seems such a waste of time
If that's what it takes to win
DM, if that's moving up ...
Well it's better than the Paladin.
Brilliant. And I'm old...