Obviously, the only way to settle this question is with a Harry Hill esque fiiiiiight.
Or, we could resort to the polls.
I have an interesting one here in one of my old PolSci textbooks by MORI cited through the Economist (admittedly it was taken a decade ago, but I can't imagine that things have changed that much since that) which is quite interesting.
In terms of basically identifying which region the pollee is in, the North East scores 89%, similar to the South East (88%) and the South West (86%). Only 66% of people in Yorkshire could identity correctly, the lowest of any region except the East.
In terms of whether the region is too divided for devolution to work well, The North East has -11 net, Yorkshire has +10. In terms of basic support for devolution, the NE is +22, Yorkshire is even stevens. (Sorry, it doesn't give the raw numbers)
You'll forgive me if I'm rather less convinced after reading this that Yorkshire is the powerhouse of English regionalism.
Trying to find some online stuff but mostly failing atm, alas.