My main character is a Gloomstalker 3/Assassin 3/Shadow Monk 6 mix, but after finally getting enough Monk levels and gear to want to use only fists I discovered they don't work with the Gloomstalker extra attack, so I might change to just Assassin/Monk.

Character one I won't name because of spoilers is Eldritch Knight 5/Druid of the Land 7 because I wanted to keep them a fighter/druid for lore reasons. It's surprisingly decent to have access to Extra Attack, Shield and Magic Missile though. Obviously not an inherently powerful combo, but good enough.

Character two I won't name for spoiler reasons is Berserker Barbarian 3/Hunter Ranger 3/Champion Fighter 6 because I wanted them to be a Berserking Ranger for lore reasons and Battle Master felt too complex for that character. It does what you would expect, which is hit stuff hard and not much else.

I respecced Shadowheart to Life Cleric 1 and the rest in Lore Bard. Not really an odd multiclass but it's very powerful. Bless, Guidance, Heavy Armor, the Life Cleric healing buff plus the full bard experience.

Thats an odd multiclass i guess it gives you wildshape but not sure why else youd want it.

I get crossclassing into fighter for a level for armor or to rogue for a few for bonus action moves/disengage or for sneak attack. The magic classes seem to not be so favorable to crossclass into though.

I got a Paladin Valor Bard (2/10) and a Light Cleric Thief (8/4).