This entire report is heavily weighted by transfers from California’s fine community college system to California state universities and colleges. If you want to know the demographics of the ~11K students who transferred from community college to a Most Competitive school, well, about half of those students transferred to Berkeley or UCLA.
At Berkeley, the transfer cohort has a higher percentage of Latino/Chicano students, a higher percentage of black students, a considerably lower percentage of Asian-Americans, and a considerably higher percentage of internationals. This suggests that money plays a big part in the choice of a student to do their first two years at community college and then transfer to a California public.