Is that still true if you take African Americans out of the equation, I am genuinely curious?

Not necessarily true. There is a HUGE contingent of very poor, rural white Republicans. (e.g. the ones who voted for Dear Leader Trump). Just like there ARE wealthy African-Americans out there. African American does not necessarily equal poor in America.

If you take out African Americans and Hispanics then no.

Well, but then also in the general population republicans win everything, so one must be careful with that analysis.