The company I work at uses Clojure and while we’re small it has some pretty big adopters as well. Walmart labs, Nubank, I think Atlassian uses it a bit.

Lisp in general also seems to have a foothold in quantum computing research, if that ever gets big it’ll have an early-mover advantage.

I think Clojure is a lisp but some people say Clojure is not because of the map and vector literals. If you agree with them definitely Clojure. Probably Elixir if you disagree.