Before the creation of the modern American Cosa Nostra, there wwere the Calabian Honored Society/N'Drangheta crews,the Sicilan Mafia crews,and the Neapolitan Camorra Crews,many of them having been in those organizations back in Italy
So when organized criminal crews came from other parts of Southern Italy such as Apulia,Basicalata.Campobasso,etc what label were they under before being absorbed into the Cosa Nostra ?
I would say most southern italians were part of the Camorra or 'Ndrangheta.
The etymological approach is criticised by historians. Historian John Dickie argues that "the flattering connotations of the word 'Ndrangheta (courage, martial prowess, manliness) indicate that the 'Ndrangheta as a social phenomenon was rooted in the same positive values, and that it only later degenerated into criminality."[20] A historical and sociological approach shows that 'Ndrangheta is actually the most recent of many earlier descriptions of the phenomenon of organised crime in Calabria. Historical evidence suggests, according to Dickie, that the use of 'Ndrangheta as a name for the Calabrian mafia was adopted by Calabrian mafiosi themselves around the time it first appeared in the documentary sources of the Carabinieri in the late 1920s.[20] The word 'Ndrangheta was brought to a wider audience by the Calabrian writer Corrado Alvaro in the Corriere della Sera in September 1955.
