y list 

a youtube (or other social media) "celebrity"

Merril : Yo this Fouseytube guy tries too hard. He's so cringeworthy.
Slad: He just y list.
Merril: Oh no wonder.

y list by Lethal Guardian September 17, 2016

Y-list celebrity

A celebrity who is famous for uploading videos online at sights like You-tube.

Patty mayo is the latest Y-list celebrity to get a major television deal.

Y-list celebrity by betcon May 15, 2007