As far as abstract US News rankings the publics are mentioned, Michigan, Texas, OSU, Ohio, and WVSOM. Among the privates: Kirksville is the oldest; DMU is in a a safe, friendly midwestern city and has good OMM; UHS is totally systems-based; PCOM has great facilities; New Jersey is small and well respected; UNECOM is in scenic Maine; NYCOM has noted clinicals; Chicago and Arizona have real campuses w/ on-site housing; Nova is in southern Florida if you can out up w/ mandatory class attendance. Basically, there are no "official" rankings and you should go where you feel most comfortable.
Think careful lthough before you attend a brand-new school, i.e., LECOM-Florida or Touro-Vegas. VCOM has brought in top administrators but still had a bumpy road its inaugural year. It's exciting to be in the first class of a new medical school, but like a first model year car, some of that excitment will be lost working out the kinks.
Disclaimer: These are just one person's opinion. Other SDNers are welcome to submit their own.