Thief job that raises the droprate of rare items from 1% to 20%, and also increases the number of drops. Can also stealth and scout dangerous areas.

Mage job whose main function is to teleport people across the world, makes money off of tips.

Buff job who spends most of his time casting and refreshing buffs like mana regen or haste on each player.

Crowd controller whose main function is to keep adds slept or bound in place until the group is ready to prioritize them. Can also stun bosses and stop them from getting off a dangerous attack.

Evil healer who uses blood magic to draw blood from enemies and pour it into allies. Can also redistribute HP within the part like WoW shaman's life link totem. Blood transfusion mechanic that strips diseases from allies and gives them to enemies.

Tinker job that spends lots of gil on buying parts for his mech, different parts grant different functions like tanking or healing or melee or ranged or expanded mana capacity.