2.84: beatmapsets/1299810#mania/2696457 - Some tricky Stairs, Spaced Doubles and Triples. A little bit challenging when you're still trying to learn 7k.
2.34 and 3.41 beatmapsets/800102#mania/1679798 - Basic Stairs with some LNs+Singles. Higher diff has lots of quick releases and jacks
I'm sure I have more to recommend but I have already forgotten about the names of the maps XD.
PS: I think there are also lower diff on these maps as well so you might want to check them out too!