Right off the bat, all New York schools are hyper competitive because there are a ton of people that apply. BU is another one, where a lot of people are interested.
I applied to umass med, Einstein, NYU, Sinai, and Weill Cornell of the ones on your list. Einstein/Sinai/NYU were honestly some of the biggest let downs for me because I thought they would be more reasonable target schools, but I did not receive interviews from any of them. I would be very wary of considering any mid or higher tier university in a major city (at least New York) a safety purely because of the volume of interest they draw.
I turned down the interview offer I had from Umass med, but I can say they were very accommodating with scheduling conflicts.
I will be attending Weill Cornell, so let me know if you have any questions about the application or interview process there. At the end of the day your fit in the program matters more than anything else, which is why I feel like I got interviewed/into a more competitive program, like Weill, than a number of others on my list.