magic - cure (u'd b ded without it!)
summon - hades (later in the game i don't rely on summons at all but his status effects help a lot)
command - counter attack (getting lots makes u indestructible )
support - all (helps so much in the first part of the game)
independent - D.Blow (when paired with vincents sniper CR it rules helps so much around temple of ancient part of game)