I've been going down the same path, doing a mini ITX ryzen build (2400GE), looking for slim SFF cases and finding nothing worthwhile from the major suppliers. All cases are either the wide "cube" style (no good for what I want) or too large (Node 202, nice case, but has a huge space for a full size GPU card that I'm not installing) or they look like they belong in a bad sci-fi movie - what is it with companies making garish, ugly cases? I did consider the InWin Chopin but because I'm using it on edge, the USB ports would be on the left, up against the 8-bay drive tank, so that's no good (can't easily reconfigure the setup here due to the design of the comp desk). Also looked at a few of the fanless cases, but they are all stupidly expensive or have to be used flat, not standing on edge.
Anyway, after many hours of searching, checking out cases all over the planet, many of which are insanely expensive (your case should not be the most expensive component of your build!) and finding nothing I wanted to use, I checked out what was available from China. Not many options there either, but some lower priced cases that look ok in the format/size I'm after, so I think I'm settled on
https://www.aliexpress.com/item/32824883952.html but also looking at the smaller
https://www.aliexpress.com/item/32981077334.html and
https://www.aliexpress.com/item/2007005529.html but not a lot of room in those last two.
I'm just amazed that there are no decent SFF cases that are:
a) affordable/not overpriced
b) don't look butt ugly or garish
c) have USB ports on the front, not the side or top (what the hell is with putting ports on top, have they never heard of dust?)
d) are the slim SFF format, not the cube format (if I had space for a 200mm wide case I would use a mini tower)
Seems to be a big hole in the market...