There are unused jobs that were applied to NPCs who never appear in combat.

Arc Duke is assigned to Barinten.
Art Witch is assigned to Balmafula.
Bi-Count is assigned to Rudvich.
Bishop is assigned to Simon.
Cardinal is assigned to Draclau.
Duke is assigned to Larg.
Another separate class named Duke is assigned to Goltana.
High Priest is assigned to Funeral.
Phony Saint is assigned to Ajora.
Contributed by Psychospacecow