List of Compilers/Langs without C dependency

FreePascal - Not even libC dependent
FASM - macro-assembler
Forth - various Forths written in assembler

If you're left without any running system anywhere, you can always write a slow bootstrapping interpreter for whatever you want in whatever language you want to re-bootstrap your compilers.

But that's a stupid hypothetical that proves nothing. Many parts of computing are effectively living in a post-C world, and the growing pains of being 100% separated from C wouldn't be half as bad as they would have been 15 years ago.