If an SDNer asks me "WAMC"? and I see a state MD school with a 20% accept rate for OOSer, I tell them "go for it".
Touro, Wester and NYITCOM have no preference for IS vs OOS...it's just that the pools of competitive applicants are very high inNY and CA.
I normally mention that MSUCOM, OH- and OK-SOM's has a regional bias.
I would add the Northeast (New Jersey, Pennsylvania, Massachusetts, Connecticut, Maryland, etc) and Chicago area as well. At most Ivy Schools, they are located in states with populations less than 5 million people, if you look up the demographics though, you will find that as much as 75 to 80 percent of the students come from the Northeast at most of the Ivy League universities. At a school like Stanford you get a geographic mix of students from all over, about 37 percent of the students are from California, with the rest from elsewhere, so they clearly do not have a bias towards in state, sure a large percent of their students are from in state but they seem to recruit students from all over the country and every region of the planet.
Duke the is the same as well, for a while though Duke was kind of like a Harvard for Southerners and was biased strongly towards students from the Southeast, but Duke has students from all over, including in its medical school.
AZCOM lists itself as having a lot of out of state students, but the entire state has a population less than San Diego and as much as 40 percent of the school comes from California. Its practically the third California DO school.
University of California might be less biased towards California students than most people think, the UC schools have moved to make themselves look more like the Ivy League so they tend to recruit students from all over the country and the world, but I would say they still would have a bias towards students from in state. Although I have heard that they have aggressively recruited students who would otherwise attend elite East Coast Ivy League schools, most of these students coming from private boarding schools in the Northeast. UC is different from the public institutions because they act more like private schools and in California you got the California State University system which is heavily biased towards CA students.
Generally speaking its absolutely silly and illogical for any private school to have region or in state bias when it comes to selecting students. Schools want to build their brand, and the best way to do this is to get people from far and wide.