OP, you really need to visit both campuses to decide for yourself.
With regard to Bama, a lot will depend on the specific fraternity you want to join. There are plenty of ethnic minorities involved in Greek Life, although probably not the “Old Row” fraternities.
I also am not sure what you mean by “I do show very prominent features of this.” Iranians are Caucasian, are they not? Lots of Bama students (including my Ashkenazi Jewish kid) have dark hair!
Also, the president of the Student Government Association (SGA), Elliot Spillers, is black, so while the APA sororities still have a long way to go IMHO with regard to diversifying their membership, that’s not true of the student body at large.
@boolaHI, just curious, have you ever visited either university?