Lemmy tends to have duplicate communities between different instances for many subjects, and this can make it hard to find information here. For instance, if i want to know if anyone has made a constructed language for birds, i have to go to the communities list and search for "conlang" and "constructed language", open every relevant community i find, and search each of those.

Is there a way for me to make a group of all these related communities such that i can see posts from all of them in a single place, and search within all of them at once?

I have found myself cross-posting the same thing in ten different communities because there's no single most popular one. I think something like these groups would also stop this from happening as much. If somebody is going to see my post in one of those communities, it's reasonable for me to assume they'll also have similar communities grouped together and i won't feel the need to repeat myself.