@mastodonmigration There are others, but I don't have a list.

Most of them have their own #Fediverse instances for years now, some even goes all the way back before there ever was a “Mastodon”. (Mastodon only came out in 2016, but the Fediverse has been around since 2008.)

Someone probably has a list somewhere. A few weeks ago, I saw some of those revived too, posting new updates. I think they finally were able to justify to their managers they need to update their Fediverse accounts too.

It was one major reason, at least from a managerial perspective, why many of these accounts were abandoned, low followers and interaction. But when the 2022 Twitter Migration batch happened, it changed things. It's easy to convince the people who call the shots. ;)