Also here: https://meta.codidact.com/questions/279409
Also here: https://meta.codidact.com/posts/281602 (indirectly)

You have a network account, and a profile on each community that you've visited while logged in. But there's nothing that ties them together; to see your posts (or other information) on a community you first have to visit that community and then click on your user link.

Can we add a network profile that, at minimum, lists and links to your community profiles? This network profile would also be a good place to attach network-wide preferences when we get to them, and also a link to your SE network profile (to support data import). And we have a request for a unified subscription list, which could be made available here. (I'll file a separate issue for that. This current one is about enablement -- we need a network profile at all before we can do stuff on it.)

The network profile should be linked from the community profile and publicly visible.