i have seen this chart. i think it may be part of a video report from la presse. possible that if part of video the narration may explain the structure...or lack there of. the la presse article it was attached with somewhat clears it up? i believe there was also a more detailed chart/list showing more possible members of said cells but a full explanation of that i cannot find. also many names on that other chart are irrelevant and misplaced. but a good find.