Viscera
He made more levels than this, but those are the most notable ones (and the other ones can be found in his profile anyway).
Other levels I liked a lot:
Umu
I’ve uploaded 6 levels so far. Nothing particularly special, but I think they turned out pretty okay:
Broken Bridges: 8EBD-0000-0018-F38D
That one’s the first and… it shows. It’s short, though, and relatively painless, so it doesn’t overstay it’s welcome.House of Squids: 126D-0000-0024-E94C
I wanted to do something with the Inkling Girl costume (of which I have the Amiibo), so I made a ghost house level with bloopers instead of boos. Contains underwater passages and a few traps (nothing inescapable, though, I hate those kind of traps).Mushroom Cave: 3603-0000-0037-091C
I wanted to do something like to SMB’s 1-3 and similar levels. It’s not that similar actually, especially since it has optional areas, but it’s mostly what I had in mind.Peach’s Escape: 326B-0000-003D-3040
Another Mystery Mushroom level. Concept is Peach escaping from Bowser’s castle (influenced especially the “prison” at the start). Has a short outside section, which I’m conceptually fond of. Might actually be my favorite of my levels so far.Passages: E7DA-0000-0046-9CDD
I had the idea of a level, where you traverse mountains (or something kinda sorta similar) via caves, switching between overworld and underworld areas. So I did that.Airship Climb: 597E-0000-0052-84AC
I kinda wanted to do something with the SMB U style, since it’s the only one I haven’t used. Problem: I don’t like it very much and don’t really want to use it. Solution: Use something that’s unique to that style. Namely, walljumps. In the end, it’s not as walljump-heavy as I planned, but that would have become lame, unless I do something Super Meat Boy-like (which I didn’t want). Also, I wanted to include a Super Mushroom section at the end, since I haven’t used it yet, but learned that you can only do that in SMB (geez, it’s like you can do the coolest stuff only there…)
spring stack training: 8EBB-0000-001D-71ED
His first level and boy what a level it is. It’s one of these really, really, REALLY hard things. You know, like Kaizo stuff. Lumi said that he needed over 100 (I think even 200) tries, before he cleared it. It’s also the hardest of his levels, the rest is not even remotely that difficult.Ashley’s Spooky Adventure!: 56E6-0000-0033-C69E
A ghost house level, using the Ashely (from Warioware) costume. Notable, in that Lumi drew art for it. It’s also my favorite level of his and has some nice ideas.Ashley’s Spooky Adventure Part 2: 3761-0000-0047-E60F
As the title says, it’s the sequel to the previous Ashley level and again a ghost house one. Noticabley tougher this time. I haven’t beaten it myself. Yet.Palutena’s Revenge: 19C7-0000-0053-B08C
An airship level with the Palutena costume. Pretty well-done. Has a nice idea, where you destroy parts of the airship by pushing lit Bob-ombs out of note blocks. Seems to be purely cosmetic, though, at least I couldn’t find a practical use for it. But maybe I’m missing something.
He made more levels than this, but those are the most notable ones (and the other ones can be found in his profile anyway).
Other levels I liked a lot:
Piranha’s Tower: DC34-0000-004B-7C66
As the name says, you climb a tower. It’s divided into short sections, which overall give it a “tall” feeling. Every section you have to do something else to reach the top. The ideas are well-thought out and -executed.Zelda Dungeon with Link !: 05B2-0000-0016-0541
Just as it says in the title. The level is made to resemble a Zelda 1 dungeon, which it does very well (better than some other examples I saw on some videos).