If you can, without visiting, hone in a bit on a couple of things, it may make it easier to whittle down the list.
For example, do you prefer a more isolated campus? The upside is often a tighter community and a dedicated effort to have lots of on-campus activities. The downside is that if you aren’t loving either of those things, your options are limited. It look like you do, (you have lots on your list) so think about the dominant culture. On that front, I could see a kid who liked Bowdoin also liking Williams, Dartmouth and Colby. Maybe not liking Vassar, Macalester, or Tufts quite so much.
Does the academic calendar matter? Colorado’s plan is pretty radical. Perfect for some students and majors, awful for others. Carleton has trimesters, quite a few have a short term in Jan, while Bates has a short term in May, and some have semesters. Personally, I like the short terms, especially for students interested in study abroad-- many manage to squeeze in an extra experience abroad this way. It’s also a great way for an artsy kid to do something intensive (especially performance related.)
All the schools on your list have excellent academics. It’s almost impossible not to develop relationships with professors at Bates or Colby or Haverford, whereas you would probably have to make a little more effort at Tufts or Dartmouth. There are fewer “big lecture” classes at the smaller schools, but some of those profs do awesome big lectures! That is a personal choice about how you learn best.
I might look at distribution requirements-- they are often an excellent way for an undecided student to explore and many departments make a point of having their best profs teach intro level classes in an effort to excite kids about their discipline. Hamilton has an open curriculum, which is really appealing to a lot of students, because it doesn’t “force” the same degree of exploration!
Based on your “list”, I can definitely say that Colby checks all the boxes you have above because I know that one well. Haverford is less outdoorsy than all of your NESCAC schools except Tufts. Whitman is probably the outdoorsy-est of your West Coast schools.
Some others along those lines to consider that have great programs but are less reachy are Denison, Dickinson, and Union.