Jabari tribe didn't live with the other tribes and they used to worship Hanuman instead of Bast. Jabari also had a gorilla monument instead of panther.
The big mine we saw in the movie had an entrance through a panther's mouth. So, it definitely didn't look like a collaboration between all tribes.
Although, technically, Jabari could claim its ownership by winning the rulership of Wakanda, did they have their own Vibranium mines and tech in separated state?