My instance as well as the other Lemmy and Mastodon instances on this list have blocked Threads.

I've recreated around 30 subreddits into communities with different icons and banners on my instance. Most of those communities remain empty, but I welcome anyone wanting to post content. You can check out some of the communities I created here. I don't know if some topics are of your interest.

To respect the rules of the lemmy.world instance and community, I want to disclose that my server is nowhere near as powerful as the specifications of the lemmy.world server indicated in this post. Nevertheless, I started my own instance because I wanted to do my part and support the decentralized nature of federated social networks. I also believe we do not truly know what will happen after July 1, and whether or not the more populated lemmy instances such as this one will get overloaded.

Both @Otome-chan and @Falmarri are correct. If you are interested in reading more, there is further discussion on that topic here: How do identical communities work on Lemmy?