Somewhat related: would you be interested in joining https://fediverser.network? The project is meant to help people migrate from Reddit to Lemmy automatically. People need to authenticate once with their Reddit credentials, and the system finds the best instance for them and looks at their list of subscribed subreddits to automatically find and follow the most relevant Fediverse communities.
The project is now at the point where more people can join and help spread out the word to Redditors, so the idea now is to get more people there to sign up (to help fill the crowdsource map of community recommendations) and to get more Reddit moderators who might be interested in helping their communities to move out of there.