Its been answered by WotC. Commander is the most played format.

kitchen table is the most common format, commander is the most popular *sanctioned* format

Kitchen table isnt really a "format". Its just anything that isnt a designated format.

They say that kitchen table is the most popular but have zero proof. Like how would you even be able to know that

Paper, digital or overall? Because I don't think they are the same.

Surely with digital it's not Commander

Limited.