Anime with wealthy/elite people setting?

I'd prefer if the majority of the characters are rich instead of just one.

Here are some examples of what I'm referring:

Ouran High School Host Club - love it
Special A - love it
Baka to Test to Shoukanjuu - love it (kind of qualify)
Princess Lover - like it
Hana Yori Dango - like it
Kimi ga Aruji de Shitsuji ga Ore de - like it
Hayate no Gotoku - hate it
Ladies vs Butlers - hate it
Umineko no Naku Koro ni - hate it

I put a little comment on each so you'll kind of have an idea about my taste

Any input would be appreciated.