For example, you can find me at https://hypothes.is/users/chrisaldrich, much of which is mirrored on my personal website in various ways as bookmarks, read posts, notes, and even a custom annotation post. Here are a few others I follow: https://boffosocko.com/about/following/#Hypothesis%20Feeds
Many annotation tools have scant social features, but there are ways to follow others’ work.