I noticed this community is not accessibile from outside lemmy.world. I switched instances to join, but we shoud federate this community so that it can be accessed from other instances. This will prevent splintering groups and help grow the community.
It should be available on other instances, but someone on that instance had to manually search for it with the full URL (https://lemmy.world/c/stlblues). I did this on lemmy.ml and now it shows in their community list
That's correct. I'd suggest you create accounts on all the big instances and search for it so more people can find it. It's definitely indexed from lemmy.ml already, but it's worth checking lemmy.ca and others.