Can you give an example of the notable exceptions of people that don't treat other races as good or better than whites?
Redlining: Done away with decades ago. In fact, an affirmative action mortgage program was launched, encouraging mortgages being granted to people who couldn't afford them, leading to the 2008 crash.
You said: "Unfortunately, this [favoritism to poor minorities] has ignored poor whites who are at just as much of a disadvantage, which is why so many poor whites now also feel discriminated against (probably validly). I think this is why so many poor whites love Trump."
I think this is correct.
"Unfortunately for them, Trump didn't make their situation better...." I don't know why you would say that. He manifestly did make it better. The "only" thing good about him was his policies.
"The solution is to continue to push for racial equity, while not leaving behind poor white families. Not all white people are born into privilege, and the Left needs to remember that. " Setting aside your use of equity, which has become a synonym for discrimination, I will say this is basically true. Will not happen. The Left will not allow that.
"The Right needs to not deny that for most of its history, the US was racist..." No one denies that. No one. The Left needs to admit that we have made great strides, and that society is no longer racist today.
"...creating systemic challenges that can't be corrected through the free market alone." Systemic is not a synonym for difficult. The free market can help the poor. But, we do need to stop focusing on victim status, and return to the "everyone can succeed" rugged individualism. Minorities that immigrate here do much better than minorities who grow up in the United States because minorities who move here believe themselves to be lucky and they see opportunity, while domestic minorities believe themselves to be victims and are daily (wrongly) told they cannot succeed because the system holds them back. If the system held back people of color, then immigrants of color would not succeed, but they do. It is domestic culture which holds back many, not skin color. I'm speaking statistically here. Obviously, individuals can succeed and do succeed. I see them where I live all the time. People can escape the culture which holds them back, but individualism is what allows it, not putting them in a racial class to hold individuals back.