jointhefediverse.net seems to be a commonly linked resource for directing people to join the Fediverse.
Curiously, it does not list Lemmy under the list of Reddit alternatives. Their GitHub README explains why.
Previous relevant discussion: https://lemmy.ml/post/78808
First link is completely unviewable for me on mobile, the entire thread is a chain of posts that say “Please don’t use Lemmy :( Human rights, oppression” with a show more button that doesn’t work, and the original thread is gone. Could you(/someone) paste what it says? I’d try on desktop but our internet has been out since the fires started in LA