[jisaacstone]

I think you are mostly correct. More precisely, if you take away race you will see that the distinction is 90% education-based. Specifically talking about immigrants, those indians and chinese (and japanese, pakistani, nepalese, korean, iranian, etc) as well as the eastern eropeans that you do not see all have a good education an most likely come from at least the top half of their society.

The Hispanic immigrants are more likely from a lower class an much more likely to have arrived on something like a family visa with no higher education at all.