Yes, you've likely never heard of them: https://www.forbes.com/real-time-billionaires/

I have no clue who these people are:

Hank & Doug Meijer

Tom & Judy Love

Stewart & Lynda Resnick

Andrew & Peggy Cherng

In fact the list of ones I recognize is tiny compared to the whole list.

Some of them don't even have pictures, but they're all billionaires. And yes, I consider even a single billion to be a great, real fortune. Most people will never crack a million.