I've been told that Arab sheiks in Saudi Arabia and the UAE laugh at the claims of Gates or Bezos or Slim being the richest person in the world. Same would happen with the Russian plutocrats, and whomever controls Chinese companies at the moment. There are other strange arrangements like Ingvar Kamprad and IKEA (which is supposedly a nonprofit but Kamprad is effectively a dictator and uses company funds for whatever he wants).
https://www.fastcodesign.com/3035734/ikea-is-a-nonprofit-and...