I have a conspiracy theory that there are far more rich people than we are lead to believe, also that most of us are just working to prop them up and keep them rich.
I have a conspiracy theory that Forbes created the rich list Which intentionally does not have despots oligarchs or royals to skew the conversation to a business matter which can get lost in the left/right divide
Diff the Bloomberg and Forbes rich lists... they're not the same list. One oligarch on those lists had their estimated net worth double after the Appleby leaks turned up some trusts. I'm pretty sure Bloomberg just calls people up and asks them how much they have.