The bigger divider, at least initially, is how much a student has to spend. People spend in different ways. Some students take loans, which they will have to repay, but also get lots from parents, so can demand en suites, run newish cars, sit in City centre coffee shops, take taxis, order Deliveroo, and be lazy about buying train tickets in advance, returning broadband routers, cleaning flats at the end of tenancies etc.
Oddly I think it helped that DD knew her spending money came from us, and that we were being frugal. She had about the same as those on full loan whose parents could not afford to contribute, and it was fine. The closest friends of both DC were first generation University. Social life involved playing sport, cooking dinner and looking forward to a big event. Also meeting friends at the library because they were too mean to heat their flats. Part of the purpose of going away to University is to meet friends from different backgrounds and though people work it out eventually, by this stage friendships are made and it does not matter. Weirdly the first thing that marked DD out as coming from a more affluent background was when she mentioned she was going home for her six monthly dental hygienist appointment. Who knew. She then gained kudos for silencing a bragging Old Etonian by mentioning the school she went to. None of her friends had heard of her school, and there was no culture of exchanging school names, so they were impressed at her ability to take part in private school top trumps. But friendships were based on sport, or pulling her weight in group projects, or inviting friends round for dinner.
DD will spend her final year on placement, and so have accommodation provided. We could pay for her to rent a room in her University town to use at weekends, in part to make up for the 18 lockdown months she ended up spending at home, but she is not interested. She wants to join her friends crashing on sofas etc. She is very lucky to be finishing without debt and to have that cushion of money that buys your way out of problems (flat deposits etc), but her friends, if anything, are only dimly aware that her family is better off than theirs. (And maybe we are not.)
On a different scale but then when I was at University one of our friendship group came from one of the very richest families in his country. He lived in a very large flat in Park Lane, which over time became a sort of hostel for homeless students, and a place to hold parties. He was a great guy, and I think enjoyed the fact that he was accepted for his own sake. I remember mentioning to someone from the same country that I knew him, and apparently it was a bit like hanging out with royalty. It never crossed our minds and we were happy to muck in to help clean up the flat when his parents were about to visit.
Bikcom - I think we assume that the family is there to help each other. We should be OK, but if not, we would hope that DC would help. Essentially, though without formalising it, a sort of loan. Part of my motivation in looking after my mother through a decade of dementia was to set an example. DB would not do it. I have no idea in the lottery of life whether my DC are more likely to look after us, than his DC are likely to look after him. I also hope they don't have to.