Accurate info on today´s mafia is very hard to come by.
It´s hard finding out exactly who all the main players are and what their businesses is.
There are no FBI documents circulating the internet that deals with the freshest info about the today´s mafia. And Wikipedia is not a reliable source.
We simply have to rely on what prosecutors say when they are making a case. And what turncoats and other informants have said. And sometimes their info stinks too.

May I suggest that you take a look at Mukremin´s excellent made mafia membercharts, posted at the top of this forum´s threadlist?
Here you will find the names of mafiamembers that are known to the authorities. Google them. You will find info on these guys. Not always accurate, but at least you will have the oppotunity to form your own opinion about them and what businesses they were/are involved with.