As a whole, the Mexican cartels might have more money than anyone. I would not be surprised if I am wrong about that. The Ndrangheta reportedly makes a lot of money too. I think it’d be better to compare individual groups within the different crime organizations. For example, the Sinaloa cartel compared to the Nirta family(Not the one involved in the San Luca feud, the other more powerful one) in the Ndrangheta. Or the Russian Bratva run by Semion Mogilevich compared to the Trapani family in Sicily run by Matteo Denaro.