Not as straight forward as that, sadly...there's literature arguing one way or the other across a small window of types, so ultimately you'll have to find a place you're comfortable with, and accept it's the best you can do in light of the evidence!
In reality, the primitive method of minting coins and cutting dies of that period are always going to overlap.
Consider this: when the great recoinage potentially includes coins that have covered many, many, hundreds of year's circulation, I can't imagine for a second that a monarch's changeover could be distinguished by just a few die/punch details, even when their own vanity is taken into account?
The great news is we'll know one day, simply because collectors are constantly asking the questions and digging ever deeper into the dies and historical documents! For the moment, however, I'm personallly happy with the Bente/Withers division. If this ever definitively changes, my coins won't...I'll just move one or maybe two coins along the page, nothing more!