Hey man im sorta preoccupied at the moment, on the way to the grocery store so i dont have long to comment on this but I wanted to welcome you to this great community and this awesome game!
I dont have a lot of experience with Warlock but I can tell you from personal experience Sorcerer and Conjurer are awesome, and absolutely check all the boxes you mentioned.
This is probably whats my favorite build leveling guide, and its @Nery’s Vitality Caster Conjurer, which is legit shit man. Great build, great guide, and lots of fun plus it grows to be strong enough to reliably farm SR, which will help you down the road with ALL your other builds!
As for Sorc i dont know of any guide as awesome as the above one, but my experience with it has been this- tons of AoE, tons of debuffing potential, and lots of great skills that can proc devotion abilities reliably. The Sorc I have is level 75 and a meme built around immobilizing and debuffing enemies, for specific use in multiplayer. Surprisingly, it has been known to carry entire parties of other players on a few occasions. But for your second guy, id go with Vitality Conjurer and follow the above guide. Had it existed and had I known about it way back when I was at the beginning of my time in GD, its what I would have done.