OP, I’ve been thinking about you. Remember that you know now more than you did a year ago, so ask the questions of each schools that will inform you about your areas of concern. Some may be around academics, others around social issues.
IME, most schools with the resources of Williams have devoted, staffed programs to support FGLI students. These exist in part because they know that there is much about their environment that will not be welcoming to that cohort. You probably have experience with the gap between what they want to do and what is achieved. As you do your research around vibe, stay attuned to the supports Williams had that you found helpful as well as the gaps. And remember that at every school, almost every student at some time or another feels like they aren’t fitting perfectly in some respect. Be compassionate with yourself.