Except for Fortran, stemming from 
gcc's tardiness to support Apple Silicon. With Fortran being 
seriously late (i.e hasn't arrived yet at this time of writing), so would be a good number of numeric and scientific software — which includes numpy, a Python library popular for data science workloads.  
Matlab not supporting Apple Silicon natively could also stem from gcc's non-presence.
FYI, 
gcc is a 
major development toolset. It's one of the two big C/C++ suite of compilers (the other one being clang, Apple's current favorite) in which a whole lot of other languages and development tools hinges upon.