Retal soldiers (level with forcewave instead), vitality casters and pets. After that probably DoT casters and spellbinders. Vitality casters are basically melee facetank casters.
For soldiers I got this YT guide for forcewave leveling, for endgame just go to the build compendium and cntrl+F “retal”
For vitality casters I got this YT leveling guide for vitality Occultist and a full HC playthrough from 0 to hero. I can also very much recommend Nery’s vitality Conjurer guide.
For pets, just ask @Maya she’s already here 
If you wanna play other builds, especially more off meta stuff, I’m sure you can find some inspiration in my HC build collection.