Basically we need someone from indie-ver.se to subscribe to those communities. In doing so indie-ver.se will begin getting posts from those communities. And the communities will appear in the "Communities" tab, if you search for it on indie-ver.se under "All".
I cannot make them appear, as if they are local from indie-ver.se, but if indie-ver.se and other instances federate with them, they will show up in searches, hopefully preventing others from creating duplicate communities.