Yes, I've seen it in some places, people love to employ 'their own kind'. Alums of the same school with the same major, and yes, same body type now that I think of it. Only problem is they all wind up with the same narrow viewpoint and skills and none of them are very good at what the company actually needs next. Where this is rampant, sell the company stock short, because the managers show the same lack of imagination in their other endeavors.