I'm confused by the criteria for what's included and what's not.

Not included: Zig, Elm, Odin, Hare

Included: GCC (not a language), Jekyll (not a language), Bel (not even sure there's a complete implementation, definitely not widely used)

Again? What's the purpose of spam posting this again and again? (https://news.ycombinator.com/item?id=40412135, https://news.ycombinator.com/item?id=40409129) XML, JSON, JQuery and Emacs aren't programming languages. What's the difference of Perl 6 and Raku in terms of their creator (who arguably ain't Larry Wall). Scala.js is not a programming language either and afaik not created by Martin Odersky.

If someone wants to plug this as a valuable data source on programming language they should probably clean up a bit.

Can you really call JSON a programming language? Or for that matter...XML?

I think with llvm, the ability exists for much less experienced folks to create languages.

We now have a ton of “not-major” languages. It seems that we get at least five, mentioned here, every week.