For a bunch of them I had to look up who posted it, because the handle was ambiguous. Which means in some cases there can be a bigger community of the same name like it’s the case with !gamedev and !rust.
I only list handles that follow the format !x[@tld], x@tld, [tld/]c/x, [tld/]m/x
The all uppercase handles don’t seem to work in lemmy: