So the commonality is that they have Youtube channels?
According to
en.wikipedia.org/wiki/List_of_most-subscribed_YouTube_channels there's a threeway tie for 50th place, T-Series Bhakti Sagar, Billie Eilish and YRF, at 34 million apiece. I've heard of Billie Eilish, Mr. Beast and The Ellen Show {spit] but the only one one the top 50 list I've ever watched is
PewDiePie.
edit:
Right now I'm listening to Joe Scott (990K subscribers) on
Where Did All Of Our Water Come From? | Answers With Joe and he's headed down a path that precludes
suspicious0bservers.org/starwater/ (Suspicious0bservers 490K subscribers•4,092 videos)