In general, the interviewers were from the same set of elite colleges, worked in the Peace Corps and/or media assignments. If any had business experience, it was media or publicity related. If any had military experience, it was in an REMF role. But even these were rare insofar as I could discern from reading through their background profiles.
The candidates they selected largely shared those same traits, were naturalized citizens and/or the right color.
The candidates they rejected largely had military experience, real world business experience or didn't go to the same group of colleges. I don't think the suit had as much to do with it as those factor, but I could be wrong.
There was a definite bias in favor of "people like them" which couldn't be explained randomly.
It's a problem that suffuses Ivy League admissions these days.