@Brexile
That's a great post and echoes my experience.
I'd say I'm quite "generic in-the-middle graduate adaptable" as are the people I've had serious relationships with in the past.
I've been on the fringes of super-achiever groups and could arguably have gone "up" in social status through focussed educational and career and relationship decisions.
But I probably lacked the will and focus to really "have that drive".
My experience as an older woman is although I try to be polite, open, present myself in a neutral adaptable way, I'm definitely automatically looked down on/dismissed in some groups after they've worked out I'm not "loaded or high status".
I would say that has bothered me a bit, but not enough to make me change how I present myself or change my career path.
(As I'm non-white, of course this is something quite a few people "see first". I didn't want to think about this when younger, but it does make a difference).
As long as I like myself and my emotions are put first and I have a financial plan I'm happy (hopefully FIRE but I need to be frugal).
I don't really feel I need to work in a super-prestigious job role for validation or to enter certain circles, and I consciously wouldn't date or socialise with someone with that mindset
(plus they'd probably dismiss me or treat me badly if they knew Daddy was unemployed and I couldn't afford that last minute week skiing).
That seems to be my "level" - no-one has loaded parents or from gentry, we've all penny-pinched sometimes and all do Ok.
Couple of my ex's went seven figures early on.
(via Oxbridge, but they worked very hard and like you say very "adaptable" in doing what they could to make money, went through a lot of "beasting" to get there.
Also, neither of them were "in the conventional posh boy scene". One was actually quite bullied in early career stages due to "face not fitting in").
I definitely agree there is a lot of social class signalling at university and when meeting new people.
Not with everyone, of course, but you can see some people blatantly "try to work out if you are worth knowing". "Do you work in an office?" "What do your parents do?". Etc. Etc.
(It's actually the same as I get older in different contexts, I find creepy men looking to cocklodge often try to suss out my finances).
I've got addicted to that cheesy TV show Made in Chelsea (probably why I'm not a high achiever, watching stuff like that ;-) )
and even there you can see the difference money makes - some of the cast members have super-loaded parents and they're treated better, seen as more "socially desirable", etc.