Mumbai has only 18% Marathis, rest of of them are from UP, Bihar, Orissa and Gujrath, costal Karnataka.
Gujjus : Rich businessmen, Stock brokers, other business etc... Kannadigas : Hotels, Resturants, Bollywood, Dance bars and other business. Parsis : Rich business men ( Godrej, TATA's etc) UP,Bihar,MP : all kinds of things from low class work to Bollywood to underworld.
Marathis : Politicos, Govt employees and traditional land holders.