Have you tried to take them down via a DMCA notice? :D My friend Darkar from " Vete A La Versh" YouTube channel has this same problem and he spends a good amount sending DMCA notices here and there :D He is one of my main advice sources on this case :) Maybe is not the same because of geographic location, but if the servers that host their platforms are hosted in USA, you can take the content down :D Cheers guys! Thanks for stopping by!