Personally, I follow accounts who are (mainly) writing about finance, gaming, hive.
I don't care if there are some random posts in between, but preferably 75% or more are about these topics.
During my time on Hive my criteria have changed (a couple of times) though and I always have a hard time unfollowing people so my current list of people I follow probably won't be 100% in line with above criteria 😅