Ancalagon
Dusty Dragon
The only multi-class that I personally find annoying is the 2 level dip into warlock so you recharge spells after a short rest. I don't know that it really adds much to power level, but thematically it doesn't make a lot of sense in my campaign because you effectively have 2 masters. That and when you put limits on rests (I frequently have 6-10 fights between long rests) it throws things off. But they're only getting low level spells back while sacrificing higher level ... back to apples and oranges.
The reasons, I think, for a warlock dip is either eldritch blast spam or hexblade cha as a melee stat.
The hexblade is pretty good to make a gish, but can benefit from a dip from another class. It's a bit too much though when it is used with paladin , the paladin doesn't need any help...