Other ‘Demakes’ like Kappaclysm/Bloudleuste?

So I’ll preface this by saying I’m not even a little good at GD - been playing since release and my hardest is still Deadlocked. That said, I love the concept of levels that let me experience a little bit of the famous high-difficulty iconic levels at a lower skill level. Two great ones are Kappaclysm (which I have beaten) and Bloudleuste (which I will go for soon), but I was wondering about other similar ‘demakes’ of popular extreme demons?

I am also aware of the existence of the shitty demon list, but I’d prefer levels that like, have literally any decoration if possible lol.