You won't find them all in 1 place, but I'll give you a list of all of them and in order of how good they are (from my perspective)

Crusader
Warden
Atropos(FW)
Castigator(FW)
Paladin
Acheron(FW)
Lancer(FW)
Errant
Gallant
Magaera(GW)

There are 2 "unique" character knights that I know of
Gerantius (Errant)
Obsidian Knight (Paladin?)