I know Jeff Bezos is considered the richest known person but there is a lot of hidden wealth in the world.
I've heard the following people may actually be trillionaires:
Putin
Oil Saudis
Rothschild family
There have many trillionaires in the world which people are covered on the underground.Like as in 2017 Most people were trillionaires for bitcoin buy and sell it before December 2017.I was heard many drug mafia and criminal there black money invest to bitcoin and also most of the deal transaction buy bitcoin so people cannot identify these people and their transaction