Common Lisp is still kicking ;)

(not its standard sure)

I don't know about kicking, it's not exactly thriving.

I prefer Lisp for tricky problem solving, but it's unfortunately a no go professionally outside of prototyping ideas.

still, some use it professionally. And pick it as first choice. Like, is CL all the rage in quantum computing?

https://github.com/azzamsa/awesome-lisp-companies/

for some, prototyping goes to production: https://blog.funcall.org/lisp%20psychoacoustics/2024/05/01/w... (this year example)

Thriving as recognized by the general public, no, but do many implementations improve and are libraries released for practical matters? Yes.