> Lisp-1's hurt my brain though

No worries!

  (defn cl-funcall [function & args]
    (apply function args))

Jokes aside, I've written a significant amount of software in Common Lisp and Clojure. The Lisp-1 vs Lisp-2 distinction isn't something that bothers me. It used to, as a beginner with strong opinions on everything. But nowadays? I don't even remember the last time I've heard Lisp-n before reading this comment.

That's true, although my 10k loc elisp config will be the last thing I will ever put on Github. Way too personal ;)

Incidentally elisp does a lot better in new Issue count too, although clojure narrowly beats it PR count. On the whole though, I think if you define mainstream to be number of people using it, then elisp probably edges clojure.