Probably most of it ended up in the hands of the record label that owns the YouTube account, and by the time they finished taking their cut the final $200 made

Probably most of it ended up in the hands of the record label that owns the YouTube account, and by the time they finished taking their cut the final $200 made it back to the song writer. But the video will have more 'creators' than a song. I.e. song writer should not be getting 20% royalties of the video spin.