Growth of 95k and 85k every month.

There are 2 accounts that I've noticed in the Game of Thrones niche that for some reason have an insanely high engagement rate and both get an average of 90k followers per month. Names are @universeofthrones and @gaemofthrones. Anyone have a clue why their organic growth is so crazy? One of the accounts was dead and not even posting for a while when Game of Thrones wasn't on, but that account is back like it never took a break and engagement obviously hasn't taken a hit. Would appreciate any…

Growth of 95k and 85k every month.