With an account on post.lurk.org you'll be able to follow people on any Mastodon server and beyond.

Registrations are currently closed because of ongoing trials to determine if this thing is seaworthy. If you don't mind the inevitable bumpy ride before hitting calmer waters, reach out to us in #general on talk.lurk.org or send a few lines to lurk at bleu255 dot com and tell us why this is relevant to your interests :)