I’ve watched some here and there, but having to try to catch them when they stream has put me too much in the mind of old tv and catching shows when they air. Watching the recording afterward is maybe good for some white noise, but it’s clearly not the intended experience I think.
I think this is a pretty good summary overall. I’d like to supplement some things:
Category 1 viewers also contain people who want to vicariously live through someone else and experience their favourite game again for the first time. They tend to stick around only for a specific game, and will move on after the playthrough is over.
Category 2 also contains viewers who watch the streams as a pure entertainment product, more akin to watching a comedian. They’re mostly interested in the banter the streamer provides. Many viewers of Northernlion and Jerma fit this description.