Initials, in Jebs case.
For the same reason that Madonna, Rihanna, Beyonce, Usher, etc. do not want want to be known by their full names: it creates the illusion that they are so important, almost royal, that one name alone will set them apart from the rest of us.
Ted
Zeus! Hera! Apollo! Spanky! Spock! Linc! McCloud! Chief! 99! Parmington! Gilligan! Skipper! Professor! Mary Anne! Huntly! Brinkley!
Rules for Changing a Limited Republican Government into an Unlimited Hereditary One
http://www.constitution.org/cmt/freneau/republic2monarchy.htm
Heredity of the entitled, arrogance of the elite, con of the criminal.
Drop kick them both through the goalposts of FReedom.
Bush, Clinton, BLEEP!
Uncle Joe, Dear Leader. They are all very friendly.