Ironically, it is very unusual for fraternities to be all-white. I work with two of them and they are both “diverse”.
For instance, when I was active in the early 80’s we had members from Brazil, Lebanon, Sri Lanka and a few black members. We also had gay members which is really common in fraternities. Our closet door never stopped swinging.
Yes....we heard Oklahoma State is only 5% “black?”