Out of the three schools, I only applied to Loyola, but I really liked what I saw. All the students are very friendly and seem to be great to study or work with. I really like their approach to the curriculum and their computer network and setup is very impressive. They have a separate computer for each cadaver and you can look up instructions for labs on the computer! That's nice! The doctors I interviewed with were great and seemed very responsive to students. I think teaching is really their biggest aim there.
As for Loyola's ranking/visibility, I think they aren't ranked mainly because they aren't a huge research institution. They do have a good amount of NIH-funded research there, but they are "middle of the pack" in that, as compared to other medical schools. The school seems to be working very hard at increasing its visibility. I work at the University of Chicago and several professors I've talked to said they've been on tour at Loyola's med school and were really impressed.
Also, it is expensive, but I think I'll go there in the fall. I get a feeling it's worth it.