The Jehovah's Witness denomination is among the most popular churches in the world.
Especially true if you consider that the JW leaders have been invited to appear before many a government, such as in Australia for the child abuse royal commission which resulted in the denomination being condemned, Russia for religious extremism which resulted in the denomination being banned, Britain which has resulted in the denomination being investigated by the charity commission, to name a few.
Then of course the denomination is also very popular with lawyers and law firms around the world who all want the opportunity to personally meet and talk to the members of the governing body, albeit in a courtroom.