My D17 applied to a number of these schools and visited many. She was a perspective Neuroscience major at the time. Her impression and shared by the family was that Amherst was way too preppy and way too ‘Bro’ for lack of a better term. Lots of athletes - I believe a very high percentage of the student body with lots of Finance majors looking at Wall Street. She did like Smith and Mt Holyoke but thought Mt. Holyoke campus was a bit too isolated for her liking. She loved Smith and Northampton where it’s located and it was one of her final choices. She eventually chose between Columbia and the school she attended which is only 1 hour away from us and one of the main reasons she chose it. She was looking for a rigorous experience with like-minded students and I think all of the schools on your list fit the bill. Columbia’s added appeal was the urban experience and everything that NYC offers.
A couple of things I’d look into:
-Fluency in a second language will most likely mean Study Abroad or Summer Immersion program. What will be the cost of this and can you afford if you have t pay full cost? At my D’s school she spent a summer In Russia and was able to get a scholarship to pay for about 3/4s of the cost. Do any the schools have anything like that.
-I think just about every school has Substance Free Dorms or Houses. Smith housing seems very cool with a number of different sized houses/dorms and they definitely have Substance Free options.