Is it common in the US for public figures to be called by their first name?

Posted by Hyde1505@reddit | AskAnAmerican | View on Reddit | 192 comments

I noticed for example politicians or also journalists are often called by their first name („Joe“, „Hillary“ etc).

Another thing I notice is in the NBA the TV commentators saying „Lebron“ instead of James, „Steph“ instead of Curry or „Luka“ instead of Doncic etc. Or the Mavs fans are chanting „fire Nico“ instead of „fire Harrison“.

Is this normal in the US to use the first name? In my country, public figures like politicians, athletes etc are called by their surnames.