Necromancer (Healer): A leech healer, uses scythes and heals by doing damage to enemies and transferring the damage as health to the healing target/party.
Exorcist (from Bravely Second, Healer): Focuses on Undo skills to revert damage/debuffs/death to party members rather than directly healing it. Can snapshot a character's status and return them to that status later with certain skills. Could instead be Time Mage with more time based manipulation added on.
Conjurer (from Bravely Default, Melee DPS): I imagine this as something like Ran'jit, where it would use summoned creatures to buff itself and for various attacks. Summoned creatures could fight alongside you and you fuse them to yourself to give you access to stronger skills temporarily. Obviously the name would not actually be Conjurer. Maybe Spiritmaster (even though that's a different Bravely Default job).