Here's a bunch of people who I think do good Science Communication and who I've found over here. Give them a follow (and let me know if there are people over here who I've missed off).
A bunch of people who you probably knew well from twitter who are now over here.
Here's a bunch of excellent Math(s) communicators I've found on bluesky. Give them a follow and hit me up with people who you think should be on the list.