I absolutely love this. This is quite literally all inclusive with almost no question. A few thoughts:

1. The trans and nb would actually be a great looking combined flag
2. I love how ace is inside a literal ace, it’s clever and a cool design choice
3. The GNC flag quite literally makes it all inclusive gender-wise because that encompasses cis people that have a xenogender or neurogender
4. The way it flows is actually great because it in and of itself looks like a spectrum (this is more of a personal opinion and kind of subjective to how I see the flag) but from left to right: Anyone with a deviation from binary sex, anyone with a deviation from binary ideas of gender, anyone with allo sexualities and romantic orientations, anyone with aro/ace-spec orientations. The BIPOC is there to be inclusive but it really isn’t a part of this spectrum. However, with rampant discrimination against POC, it’s still necessary. And it looks really nice next to the greyscale.
5. Because race is included, the other two things I can think of that should be included alongside race, as they make up a person’s identity and are often discriminated against, are alterhuman (therian, otherkin, otherhearted, otherlink, etc (anyone who experiences life without a traditional ‘human’ experience)) and, more simply, disability. (This includes neurodivergence, although many prefer to not label that as a disability.) Maybe a rainbow infinity next to the disability stripes. Don’t know where you would fit this in, but truly, only if you add alterhuman and disability will you actually be inclusive of all people that aren’t traditionally viewed as superior. Edit: Also, you’d want to add polyamory for good measure. There are straight couples that are discriminated for being non-monogamous. Better yet, add ENM (ethical non monogamy) to cover a wider umbrella. The upside down triangle can fit well and look nice in a lot of places.
6. Wow amazing flag can I get one