I think pyramad and bartendotron are really slept on.
Pyramad almost always guarantees smooth sailing till mid game and can make non-optimal builds work till then, to give you a chance to improve and dig for better minions. And he also makes optimal builds even stronger, plus you can play him with micromachine which can result in pretty crazy games.

And bartendotron is super strong if you get to tier 3 first (which you probably will). You can pick up all of the important key minions like cobalt, floating watcher, pack leader, soul juggler and so on. And, in my experience, you can also utilize triples better since you can more often than not level up your tavern tier before you play the triple for extra value(i.e. you get your build defining cards earlier than anyone else). He is one of my better heroes and I have more success on him than i have on Yogg, currently.

The thing with Rafaam is that his hero power is always (at the very least) free, since you can always sell any garbage minion you get. Ofc you can put the tokens first, but that also only helps if you attack first, so there’s no guarantee to deny him a gold advantage. And something i see all the time is people ruining their early to mid game attack orders just to stop rafaam from getting a good minion and therefore rather taking 4-6 damage instead. For me personally Rafaam is way more consistent than Van Cleef, but I would objectively say that they are about equal and should both be adjusted in some way or another.