What classes do you like to build for everyone?
I’m running my Tav as a Bard/Paladin/Wiz to mimic my favorite character I played from 5e a few years back.
Astarion is a Gloomstalker, Shadowheart is a Light Cleric, Gale is a Fighter 1/Wizard X, Wyll is a Draconic Fiend Sorlock, Laezel is a Red Draconic Sorcadin. I haven’t really used Minthara or Halsik much, but imagine they would stay single classed as Oathbreaker and Moon Druid.
Tav is usually some sort of archer, either Thief/Gloomstalker or Swords Bard. Lots of equipment to boost ranged to-hit rolls, making Sharpshooter ridiculously good.
Shart goes War or Tempest Cleric, single classed.
Karlach is a throwing Berzerker, with Thief mixed in later.
Wyll is a Paladin/Warlock smite machine.
Gale is an Abjuration Wizard, possibly with one level of Tempest Cleric.
The rest hang out at camp.