Tough call. On the one hand people who afifrmatively want the core should generally choose Columbia. On the other hand Columbia does not have the atmosphere you want and is less socially cohesive.
Dartmouth is likely the most cohesive socially of your main choices, but you haven’t been there or done an overnight to help you judge how well you fit there.
I personally do not find Brown all that stunning, but it might be a good choice for you.
My alma mater Cornell also has a strong English program, and a great campus, but it is very large (as is Penn, but Penn has proportionally more grad students).
The good news is you have great choices, this is a good problem to have.