Game-specific mods usually have higher compatibility levels than a fully up to date version. This is a result of Kaldaien moving on and working on other games that might lower the compatibility with older games.
That said, at least NieR: Automata should be fine with using SKIF — Kaldaien implemented HDR support for it a few months ago so it is still relevant.
For Disgaea, I am unsure. Test it and see if SKIF works great with it, and if not use the old Pretty Prinny mod.