Mukesh Ambani vs. Sergey Brin

During the Covid-19 lockdown, Ambani raised more than $20 billion selling a third of Jio to a string of investors, such as Facebook and Google. Reliance owns Network18, a licensee of Forbes Media. Ambani's U.S. educated daughter Isha's marriage to fellow billionaire Ajay Piramal's son in December 2018 drew 10,000 guests, including Hillary Clinton. Reliance Industries bought the Mandarin Oriental hotel in New York for $98 million.

The richest immigrant in America, Brin has been an outspoken critic of Trump's immigration ban. Brin moved to the U.S. from Russia when he was 6 years old in the wake of anti-Semitism against his family.