I started with LoadingReadyRun (@LoadingReadyRun@kind.social) because I've been a fan of their work for many years now.
I've found a couple of authors I'm fond of: Charles Stross (@cstross@wandering.shop) and Neil Gaiman (@neilhimself@mastodon.social).
George Takei is a good one to follow as well (@georgetakei@universeodon.com).
He seems like a lovely man and is generally interesting. But he has an opinion on everything even when he doesn’t have any knowledge of the subject. So can be a difficult follow on occasion. If that happens, don’t unfollow but put him on mute for a few days.