There is certainly a wide spectrum in how people behave, and an important factor is also how they would like to be perceived by others. Rundowns on how wealthy people live will tend to overindex on the behavior of people who want others to know they’re wealthy.
As an example, there’s a culture among what people refer to as "old money" families in the US northeast (with generational wealth from long ago), wherein they tend to avoid seeming outwardly wealthy or really talking about money at all…generally aiming to project an unpretentious vibe, eschewing designer clothes and driving 20 year old Volvos, but still spending vacations at long-owned family getaways worth tens of millions, flying first or charter, and send their kids to specific, expensive schools to socialize with others of similar backgrounds.
As an example, there’s a culture among what people refer to as "old money" families in the US northeast (with generational wealth from long ago), wherein they tend to avoid seeming outwardly wealthy or really talking about money at all…generally aiming to project an unpretentious vibe, eschewing designer clothes and driving 20 year old Volvos, but still spending vacations at long-owned family getaways worth tens of millions, flying first or charter, and send their kids to specific, expensive schools to socialize with others of similar backgrounds.