There are multiple initiatives to support the migration from Twitter to Mastodon (see also this blog post ). But Wikidata should not be forgotten here which has been tracking Mastodon accounts of things in their database:

Screenshot of a Wikidata query showing the growth in number of Mastodon accounts listed in Wikidata.

So, here are some Wikidata SPARQL queries to see the uptake:

If you find yourself missing, back in April I tweeted (sorry) how you can find yourself and others in Wikidata and how to add your or their Mastodon account.