Zaraki is Berzerker.
Ikkaku is Lancer.
Ichigo is Saber.UryuuByakuya is Archer. (Silly Morph, Archers don't use bows!)
Kusajishi Yachiru is Rider.
Soi Fon is (Fake) Assassin.
Rukia is Caster.
Byakuya is definitely Archer. Uryuu is some kind of anti-Archer that only uses bows and arrows to the point of thinking swords are arrows...
— GitP forum; Morph Bark, Mando Knight