I am developing a test suite for portability of clojure.core across dialects. You can find it here: https://github.com/jank-lang/clojure-test-suite
Currently, we have Clojure, ClojureScript, ClojureCLR, Babashka, Basilisp, Phel, and jank running the test suite.
I have only used Clojure, ClojureScript, and Babashka in production. But I am the creator of jank.
I’d like to say thanks for that - I’ve been using it on my IR version of joker: https://rcarmo.github.io/projects/go-joker/ and it’s been very helpful to pin down bugs.