Can't go wrong with some of the powerhouse builds for your high damage:
8 Open Hand Monk/4 Thief
12 Eldritch Knight Tosser
2 Warlock/10 Sorcerer Eldritch Blaster
8 Berserker/4 Thief Tosser
5 Warlock/7 Paladin
For your supports:
12 Spore Druid (Though, less potent because of Haste Spores being less good in Honour Mode)
6 Lore Bard/6 Diviner Wizard (Cutting Words/Inspiration AND Portent Dice on short rest pog)
12 Light Cleric
Of course, you can also use the cheese of having a stay-at-home Cleric with:
Heavy Armour Mastery
Adamantine Splint Armour (Later Armour of Persistence)
Loviatar's Scourge
Absolute's Protector (Have the character get branded)
Varsh Ko'kuu's Boots
The Sparkswall
Ring of Poison Resistance
Transmutation Stone of Thunder
Elixir of Psychic Resistance
To run around slapping Warding Bond on your party (Later you can also add Freedom of Movement and/or Death Ward). Which they'll be free to do with resistance to everything bar Radiant and Force damage and flat damage reduction on top (So damage they take has to go through double resistance and their damage reduction. Even better if your party also has Heavy Armour Mastery for their own damage reductions on top). So your party can have constant +1 AC, +1 Saves and Resistance to all damage.
