Those projects from the ship of harkinian are not recomp. Those are based on completed decompilation projects. So they're not translating the mips assembly to an unreadable C being recompiled. They're true ports from as close to the real source code as you can get.
[0]: https://gamejolt.com/games/SA2R/939490
[1]: https://youtube.com/c/ChaosX (best link as there is no official website)