I quite like this graphic Terre des Hommes Germany (@tdh, a humanitarian organization focused on children's rights) made as part of their #twittermigration.
It's straightforward: we're leaving X because of hate speech & misinformation; you can find us on Threads and Mastodon.
Suggestions for anyone creating similar graphics:
- Include the handles in the graphic (some users will only share the graphic)
- Describe Mastodon/fediverse as "social media that belongs to the public" or similar.