If we are picky then 'Draper' is a brand who do actually make 'Phillips' type bits or drivers much like any other tool maker , Stanley for instance
And for a specific shapes of 'Phillips' you need to specify the size e.g. 1,2 or 3
back on topic if you asked which was the most popular number of 'Philips' , I would confidently say 2 , though I would caveat that by suggesting that many would use a 2 when a 1 or a 3 might be the better choice , and even that is ignoring the fact that the screw head might even be a Pozi 1,2 or 3 in the first place and not a Philips at all
life is so bloody complicated π