With an account on beepboop.one you'll be able to follow people on any Mastodon server and beyond.

Beep Boop One is a private instance for Alex Daily and a few friends that will never be open for public registration. If you're a friend, you can ask -- but you do risk me telling you why not. If you're looking to sign up for Mastodon / the fediverse, ask your friends for instance recommendations, or go to joinmastodon.org.