My choice would be "influencer." I think I'll send it in.....

BTW, the labeling of a U.S. President as "POTUS," First Lady as "FLOTUS," Supreme Court as "SCOTUS".....Here's one of our favorite dictionaries with more:
During my journalism days, we used to see "SCOTUS" when the wire services featured a story about the Supreme Court. I think the rise of social media (especially Twitter, with its limited characters) has corresponded with a wider use of those terms.