Lisp is strongly typed and uses dynamic typing. Compiled Common Lisp code absolutely does not dispatch on every variable access. And there of course have been

Lisp is strongly typed and uses dynamic typing. Compiled Common Lisp code absolutely does not dispatch on every variable access. And there of course have been and still are operating systems written in Lisp without a single line of C. Some of them even run on decidedly non-exotic hardware like x86_64 or arm64.