I run a few groups, like @fediversenews@venera.social, mostly on Friendica. It's okay, but Friendica resembles Facebook Groups more than Reddit. I also like the moderation options that Lemmy has.
Currently, I'm testing jerboa, which is an Android client for Lemmy. It's in alpha, has a few hiccups, but it's coming along nicely.
Personally, I hope the #RedditMigration spurs adoption of more Fediverse server software. And I hope Mastodon users continue to interact with Lemmy and Kbin.
All that said, as a mod of a Reddit community (r/Sizz) I somewhat regret giving Reddit all that content. They have nerve charging so much for API access!
Hopefully, we can build a better version of social media that focuses on protocols, not platforms.
I suspect you don't understand how this works. You create an account on any lemmy.site and you can access communities on every lemmy.site. So my account is on lemmy.fmhy.ml, but I can subscribe to communities on Beehaw or lemmy.ml.
Some instances are just like any other. Others have more distinct communities. E.g. lemmy.ca is mostly comprised of Canadians and Canada-related communities.