You seem to be unaware of the Fair Housing Act.
In Philadelphia, Black Americans are 2.7 times as likely to be denied a mortgage than whites and nearly three-quarters of all banks are located in majority white neighborhoods, despite the population of the city being 44.1% black and 35.8% white. The gap between black and white home ownership is higher now than it was in 1960, as banks across the country continue to steer minority clients towards lower quality homes, offer them more expensive and predatory loans, raise additional barriers to acquiring loans, provide less help for paying off loans, and invest less in neighborhoods with majority black populations.
If any of that could be proven to be based on discrimination, you’d have a hell of a case with FHEO. Also during the housing bubble of 2002–2007, banks were giving out cheater, no-doc mortgages to lots of people of any color. Only they were unable to keep their homes when the subprime market collapsed. The lesson is that poor people with little income should not be buying homes they can’t afford.
Finally your whole thesis about steering and redlining has become terribly dated. Anyone can get on Zillow and see an estimated price or call Rocket Mortgage and get a quote.