I don't knoww haha, because I would have to check on the original instance, and most of the time I just subscribe and move on.
I think on kbin.social one of the developers is adding the new communities very quickly so the display name is based on the address one.
When I do search on kbin.social however for a community, ones on lemmy won't show with the display name anyway I think; it will show the address like "adhd@lemmy.dbzer0.com"
I was able to find and add this community because of a reddit migration directory to show me this community is for adhdmemes :)