Good point. I was confused and thought it was possible to see other instances communities directly in Lemmy but it is not.

I do think we should have a feature to see all communities in the local instance in wefwef though.

I’m not 100% sure but I assume Lemmy.world is federated with a number of other instances. Also keep in mind it only shows the username (at least in compact view) in the post list. You have to open the actual post to see the full user@instance.

“Home” is your subscribed communities, “all” is everything from all communities the instance your using is federated with and “local” is everything from only the instance you’re using.