I have certainly heard about Lisp, in fact, many haven't heard about Allegro Common Lisp or Lisp Works, the only ones that matter, which the FOSS usually ignores.
This doesn't change the fact that sadly Lisp and Smalltalk are almost nowhere to be seen in 2021 (in large deployments).
What are the innovations brought by Allegro and Lisp Works, relative to Clojure? Just asking as I haven't heard about those, I only have experience with Clj.
And this is the best we currently have, other languages are even more behind than those two ones.