For creative writing, Middlebury would likely be a better choice than WIlliams.
Kenyon, which the OP already has on their list is also excellent, as well.
I will again post what I think is the best list of colleges for creative writing. Most of the others suffer from the fact that they are created by people who aren’t engaged in creative writing. This list is by a literary Journal which if very familiar with the quality of the work created by the graduates and faculty of these places, and focusses on that:
PS. I’m not entirely an uninterested party. My daughter, who does engage in creative writing (but majored in neuroscience), recently graduated from Middlebury.