That's actually pretty spot on Nickle, the families in Southern Ontario did have Ndrangheta roots, but they all answered to Buffalo and played by Magaddino's rules, so technically speaking yes, it's correct to say that Magaddino was the big boss of the families in Southern Ontario and he pretty much represented them in the American commission.

With that said, we do have to consider timelines here, meaning that the Magaddino era is gone, and while some still answer or fly the Buffalo banner (Luppino-Violi family), others no longer do that (Ndrangheta families of Toronto). Then there are some groups in the gray area, the Musitanos being one of them who at some point did answer to Buffalo like the rest of them, but later shifted alliances to the Rizzuto family instead as Buffalo weakened.