Socialebrity 

A socialite or other person made famous just by being his/herself. In school, this would be the popular kid.

Everybody follows what she does -- she's something of a socialebrity

Socialebrity by JoySiren May 10, 2018

Scilebrity 

A well known actor, personality or writer (above B list) who does sci-fi conventions. They can also cross genres well.

I just met Malcolm McDowell in the elevator! He's a real Scilebrity.

Scilebrity by SIMAFOL March 5, 2010