In case you didn't know the character after 'Z' in the ASCII character set is either '{' or '[' depending whether you go upper case or lower case.
So you could call them "bracket list celebrities"
You can even go one step further and go to the last character in the character set which is DEL, so you can call them "DEL list celebrities!!!"
So you could call them "bracket list celebrities"

You can even go one step further and go to the last character in the character set which is DEL, so you can call them "DEL list celebrities!!!"