They're mostly music related, but there's a catch - it appears for the moment, they're only available on the U.S. version of the service. Not sure when they might be coming to Pluto TV Canada, but they're easily heard with a VPN.

The TikTok station appears to be drawing the most attention. 

"TikTok Radio is billed as a 24/7 stream of trending tracks and clips curated from TikTok, pairing full-length songs with the viral moments that drove their discovery."

Stingray adds ZenLIFE, Qello Concerts, TikTok Radio and DJAZZ to Pluto TV