An important and compelling analysis. As you may be aware, Tatjana Meschede, Joanna Taylor, Alexis Mann, and Thomas Shapiro at the Federal Reserve Bank in St. Louis found in 2017 that "White college-educated households amass wealth, whereas the wealth of their Black counterparts declines." https://research.stlouisfed.org/publications/review/2017/02/15/family-achievements-how-a-college-degree-accumulates-wealth-for-whites-and-not-for-blacks/

A recent Washington Post article corroborated your findings about the racial wealth gap: https://www.washingtonpost.com/business/2020/06/04/economic-divide-black-households/