Mind you I use (and thus pay for) Sourcehut: the vast majority of folks won't be cross shopping Sourcehut and GitHub. As it stands now the UX is (to put it charitably) bad. There's a lot to like, but overall Sourcehut is disjointed rather than cohesive. The workflow itself is also an acquired taste. With a bit of spit and polish Sourcehut could be quite nice to use, but it's not there yet. Hell, I bet Drew could pick up some of the UX folks that GitHub laid off.

The others mentioned are more or less knockoffs of GitHub, because at one point GitHub was quite worth emulating.