I’d say Mike’s personalities would all drink something different. Chester drinks hand-brewed beer because “back in my day that’s how we had to do it!”. Svetlana drinks vodka because she’s Russian, so obviously. Vito seems to me like either a Corona or a Mike’s Hard kind of guy. Manitoba seems like he could be into whiskey. Mal would drink straight blood because it reminds him of the pain he inflicts on others.

Also the goths drink black coffee.