It depends massively on platform, architecture, and programming language. Hex-Rays is probably still ideal for embedded and obscure platforms. Ghidra's decompil

It depends massively on platform, architecture, and programming language. Hex-Rays is probably still ideal for embedded and obscure platforms. Ghidra's decompiler seems optimized for ARM and amd64 userland consumer-level stuff that the NSA was most interested in hacking.