I've held off on trying to get on #Bluesky because it's still centralized in practice, but given that it plans to open up federation this year ( https://blueskyweb.xyz/blog/11-15-2023-toward-federation ) it might be worth thinking about.
I plan to make this a proper blog post, but I will highlight one thing I like, the domain-name handles, which solve a problem that I've had to deal with on the #Fediverse (identity based on an instance which can go down).