This is specifically what I had in mind: https://grants.nih.gov/grants/guide/notice-files/NOT-OD-20-0...
Keep in mind that administrative programs like DEI offices are often unsupported virtue signaling. What matters is government and private funding, and there are absolutely opportunities in both arenas for support for “heterosexual white males” who come from unusual backgrounds.
In your case, I’d suggest NSF graduate fellowships and the Simon’s foundation.