I visited my cousin at Williams in the late 80’s, and it was like Clone City. Her 6 suitemates were practically identical. She was from a middle class family and it seemed most of the others were too, or from higher economic brackets. Three of the six were named Katie and all were from MA/NY/CT.
My sister went to Middlebury in the 70’s. She was definitely a ‘poor kid.’ She was also a poor kid when she transferred to a flagship, but at least there were a lot of other poor kids too.
I doubt it is very different now,and I didn’t notice any difference when we were touring schools. There might be more people of color, but are they included if they are from different SES groups? Are they invited to the vacations on the Cape or the ski trips, and can they afford them? My kids are the poor kids and they don’t go on spring break to ‘the Islands’ or Mexico or skiing for a week, but they are not the only ones who don’t.