My gut says Nintendo, because Microsoft doesn't give a shit what you use as long as you write for them, and Sony doesn't feel like they'd be that petty.

You can ship games for Nintendo with private modification of NativeAOT + FNA: https://viridiansoftware.com/blog/csharp-on-game-consoles

But Microsoft _does_ have a widely known C++ compiler. I doubt Sony does. Does Nintendo?