If you watch college ball like I do, it's rare to find more than a few of the top fifty teams with more than a few white players. Look at Kentucky the best team in the country. Year after year for the past twenty years or more virtually the whole team has been black. That is true for most of top fifty teams.
In the Big Ten there are some other teams with more white players than black players. Iowa started four white players this year and made the NCAA tournament. But some Big Ten teams start five black players (Ohio St.) and most of the key reserves are also black.
Nevertheless, there are other good teams that play a lot of white players like Wisconsin. Gonzaga just missed going to the Final Four starting three white players and some key white reserves.