“Le Mafie” includes Cosa Nostra (Sicilian mafia) ‘Ndrangheta (Calabrian mafia), Camorra (Napolitano mafia), Sacra Corona Unita (Pugliese mafia), Banda della Magliana (Roman mafia), Mala del Brenta (Veneto mafia) and others (but I’m no expert, I’m from Milan).

That’s arguably true, but nowadays Mafia or the plural “le Mafie” (the Mafias) is often used as a catch all term for such organised crime groups in Italy, with the Sicilians referred to as the Cosa Nostra.