I’ve always been more attracted to the higher level languages and followed llvm from a compiler interest. So I know the principles, but I would like to understa

I’ve always been more attracted to the higher level languages and followed llvm from a compiler interest. So I know the principles, but I would like to understand more. Especially related to cross compilation. Does someone have a source explaining the state of the art? With all the different compilers, gcc, clang and the different flavours of linkers: ld, lld, mold, gold, ?