Clojure is a kind of Javified Lisp; if you're looking for a canonical example, the GP provided an example of Common Lisp code, which gives you optional type declarations that are compile-time checked and are used by compilers to generate more optimized code.

Common Lisp not a Lisp derivative: it is Lisp. Someday, of course, there may be a successor language, but Clojure is not.

Clojure is a Lisp-like language with — I'm told — many good and/or interesting idea. I don't know if it's actually the most popular Lisp-like language (I'd think Scheme would be), but it probably is more popular than Lisp. That's sad, but that's life.