GraalVM
Graal supports Nim by supporting LLVM 

That might be a bit of a stretch, since we could say a lot of stuff that supports C can be ranked on this list. 

Still, I consider Graal potentially interesting for some people, so maybe you can find a place. 

Next to LLVM, is also Python, R, JS, Ruby and a bunch of others supported, and you can mix and match the languages.

If valid, what category could apply?

https://www.graalvm.org/22.2/reference-manual/llvm/

