Indian Bollywood music channel T-Series is currently the channel with the most followers on YouTube (172 million), followed by comedy channel PewDiePie (109 million followers) run by Swede Felix Kjellberg. In 2018, both channels batteled fiercely over YouTube's top 1 position, but Kjellberg had to finally give in to the mass appeal of Indian cinematic soundtracks.
Previously, PewDiePie had been the account with the most subscribers on YouTube (save YouTube’s own channels) for five years. When the Indian channel was inching up to steal the number one spot, Kjellberg and fellow YouTuber friends rallied to keep it by publishing novelty diss track Bitch Lasagna about T-Series (which garnered 282 million views) and buying expensive seats at the 2019 Super Bowl to hold up messages urging people to subscribe. Indian YouTubers jumped the bandwagon and answered with their own tracks asking people to follow the T-Series account instead, a tactic which ultimately suceeded.
The ranking of the most-followed Youtube channels was still dominated by music and entertainment offerings until early 2020. Since then, more kids content channels have appeared on the scene - potentially testament to coronavirus-induced demand by parents caring for their children at home during school and daycare closures.