Low potency, instant cast healer with faster GCD. Relies on spamming heals that have secondary buff effects.

Healer that relies on distributing damage taken by target to the whole party + AoE healing toolkit with various potencies. (kinda Arithmetician)

HP based DPS, uses HP to deliver powerful attacks (classic FF Dark Knight)

"Crafting healer" - has set combinations of skills to create and use concoctions to heal allies (think FFV Chemist using something like the Mudra System)