Most of these I gathered on my own. Another great list is here: nepeta.mozai.com/shimeji/ All the shimeji on that list are also listed here.
The first list set will all take you to the original source of the shimeji, NOT the direct download. Some of the download links are in the descriptions. The second list set is of direct downloads for shimeji with uncredited sources. If you know who they belong to, please let me know. ALWAYS credit your source when posting images of the shimeji!
If you know of a shimeji not on this list please let me know! I'm always trying to keep it updated and hunt for original sources. I know there's a lot more out there that I own or have seen but can't find the original links for so any help you have would be greatly appreciated!
Shimeji I'm on the hunt for again:
Also, keep in mind that the shimeji listed under unknown sources are NOT listed in their respective categories. So, if you're looking for a shimeji (e.g. sollux) and it doesn't show in the categorized list, check under unknown sources.
God Tier Gamzee
God Tier Feferi
4 Chords Nepeta
God Tier Aradia
Candy Addict Sollux
God Tier Sollux
Sweet Bro and Hella Jeff
HussieLil Cal(this was made by a local friend of mine, Kevin. It is a direct link)
Pairings or ships/multi downloads:
Unknown sources/Direct Downloads:
4 Chords Gamzee
Dad (link source?)
Sollux (karkat and sollux set)
Karkat (karkat and sollux set)
Slimer Suit John
Alt link for Slimer Suit John
Bro (source disappeared?--originally oliolioxenphree on DA):
Nepeta 2 (source disappeared? Zethrina)
Sollux 2 (ZethRina?)