I'm not 100% sure schools actually even know who got their first choice. At least they didn't when I was in med school. Schools aren't part of the ranking process. They only know what people ended up with, and who didnt match. But I would suggest that it's not so meaningful. A place where no one gets their top choice may simply mean that everybody burns one rank on a very unrealistic longshot, and are totally content if they get their second choice.. On the other hand, a place where 100% get one of their top two choices might mean that even with a ton of self selection, people are only getting a couple of interviews. Statistics are never meaningful in a vacuum. I think folks fool themselves into thinking match lists mean different things, but honestly without the appropriate context (ie what people actually wanted, rather than what they got) they are more often misleading than helpful. The mindset is so different as a premed than as a fourth year med student, so it's like trying to use rudimentary Latin skills to read a menu in Portuguese. You think you are getting it until they bring you a shoe with cheese on it.