Jeff Bezos is currently the wealthiest person on the planet due to his controlling stake in Amazon. (However, he has a lot of private investments also).
The wealthiest remaining Rothschild has a net worth under $2 billion. Family fortunes tend to become diluted and squandered through the generations. The Rothschild’s wealth is exaggerated by outdated, anti-semetic conspiracy theories.
Putin is certainly very wealthy, but my guess is that he couldn’t exercise full control over all the money he nominally controls without alienating his fellow oligarchs or tanking the Russian economy.
This leaves Jeff Bezos as the wealthiest person on earth.