You can call it video essays, Let's Plays, news reports, slop videos, and so on.
To repeat fgiesen/ryg: to a content plumber, it's all content, just like the mail system delivers packages and doesn't really care what's in them. The video engineers at YouTube don't care whether it's a news report or a slop video, as long as the frames get on your screen. However the sender and receiver had better care what's in the package or something's gone horribly wrong.