As per Google search these are the top 3 richest person of this world.
1.Jeff Bezos $108.9 billion
2.Bill Gates $91.9 billion
3.Warren Buffett $90.1 billion
But these maybe wrong since in this world there are lot of blackmoney is available which were not recorded by any governments.
In my opinion the politicians from the third world countries can be in the richest persons because they were stealing all their country's taxes.
I also assume that third world countries may have a lot of money. But in General I think who has the most resources, and the richest man on earth. I can't tell you about people. I will talk about resource-rich countries
Saudi Arabia
Russia
The third world countries, just very few people do have a lot of money and these are the corrupt politicians who keep looting and siphoning funds that belongs to the country in which they are meant to use in building infrastructures, creating a better standard of living, education, health, name them.
All the above, all they care about is themselves and their immediate family members. Those kind of people are definitely not termed as wealthy or should ever be classified among any wealthiest men, as they cannot even themselves come out clean on how they got the money, and hence, they find a way to hide it. What a world!