We usually see the UN human development index cited for this. Which ranks countries based on life expectancy, education, as well as income. For the wealthy, my assumption is that you can buy your way to better education and life expectancy in the US. But for the middle class, you have no option but to slog through with services that lag many other developed countries [1]
[1] https://en.m.wikipedia.org/wiki/List_of_countries_by_Human_D...