What do you want to express?

1. Classmate M, whose mother is the regional general manager and father is the vice president, is from Taiyuan. We all say that her family is really rich. She said that she was as poor as I was when I was a child, and her family also gradually became better off as mine did. But the difference is that until we met, I was still a loser, reluctant to spend money and dared not ask my family for money, even though they would give me money as long as I asked for it; while she is very fashionable, knowing all the cutting-edge things, unlike me. She doesn’t spend money lavishly, but she always has a pair of AJs, and the same goes for bags and cosmetics...
In a nutshell, her hobbies are what only serious rich people can have (but she also knows about relatively low-end things).
2. Classmate Z, one of whose parents is a senior executive of a Fortune 50 company. One thing that shocked us that year was that on the first Double 11 after he enrolled, he cleared his shopping cart, with a total amount of more than 20,000 yuan.
His things are not particularly expensive, but everything is not cheap, and everything is beyond the affordability of ordinary "well-off families".
Is he a real "rich second generation" or "unworldly"? He has the kind of temperament that strangers would think "Is his family rich?" when they see him. Ordinary people would feel that he is very distant and high, even though he is actually very peaceful and easy to communicate with.
Classmate 3, no one knew his family was rich after one and a half years of enrollment. He doesn't talk much, has a few friends, and is very normal in the dormitory.
He plays games with everyone using a computer worth three or four thousand yuan, wears sportswear (or other clothes) from 10 years ago that doesn't match his age, and very ordinary shoes, and a schoolbag.
I (and maybe other classmates) once thought he was a poor student until someone who knew the value of the watch on his wrist recognized it.
After asking, I found out that his family is not poor at all, and his family background is commensurate with this watch.