I'm not talking about a mere presence, I mean control over organized crime.
That's what I'm speaking on Oak. Think about how much info on southern OC groups/networks outside of LCN. I dug around for years and have come across some. The full details range from scant to semi detailed based on the locations. Memphis had a political machine/syndicate that engaged in OC alongside with major racketeers in which 1 was Irish....who was supplanted by an Non-LCN Italian racketeer ( chances of that LoL) . As early as the 70s & before ATL newspaper release OC related reports in the city and Black syndicates were the leading factor with a modest mention to LCN members/associates.
New Orleans will primary focus on OC is LCN despite the other racketeers who may or not kicked up to Marcello. Likewise with Tampa.