"not white" isn't a race or demographic. african americans aren't the same as african-africans, and those are different from mexican, indian, asian, native american, etc.

and given how indians and east asians tend to be the overall wealthiest demographics, plus the "hispanic paradox", suggests that this is a way more complex issue then you're framing it.

https://en.wikipedia.org/wiki/Hispanic_paradox

I called out several ways the US is more diverse, and ethic is one of them.

Yeah, it can be a challenge to integrate every cultural background into our society and it is something we fail to do with equal success.