The hardcore members and associates organise themselves around individuals that are making the gang its money. So the members with the drug connects, burglary rings, prostitution, fraud will be the people that the other hardcore gangsters will structure themselves around.

Heres a few recent cases.
leader of chicago drug trafficking ring sentenced.
ranking member of gangster disciples sentenced.
rolling 60s crips sex trafficking ring
ny id theft ring
bloods street gang targets nj banks in hi tech scams