Warlock is best paired with either sorcerer or Paladin, as the latter levels of warlock drop off a bit in terms of power.
My Wyll is a 5 Devotion Paladin / 5 Fiend Warlock / 2 Fighter and gets the job done. I like using the ring that gives you a guaranteed crit after you kill something to make his smites even bigger.
I’m not sure what the warlock / sorcerer meta build is.
I think you have the right idea for rogue / gloomstalker.
There are some ultra tanky cleric builds, but I don’t think the game is hard enough to warrant a pure tank. I prefer straight offense.
Monk builds are pretty crazy. Maybe make Shadowheart a 6 monk / 4 rogue / 2 fighter or druid of Shar?
Honestly, the power gaming builds are all so powerfu that if you are running one or two it doesn’t matter what you do with the rest of your party.
