I’m originally from Popland, but I’ve been living in Sodavania for the past quarter century.
And they missed a category. In some parts of the south, it’s actually “cocola.”
The sharp division between the UP and eastern Wisconsin is fascinating. I remember back in the seventies when my cousins moved to Milwaukee from where we lived in southeast Michigan, they told me about having to get used to the new vocabulary (they also called water fountains “bubblers”–weirdos).
I’m curious about the “other.” What do they call soft drinks in New Mexico?
Further thoughts: harkening back to Albion’s Seed, it would seem that both Puritans and Quakers are soda drinkers, whereas the Presbyterians opt for coke. And the Cavaliers seem to be a mix between the two. But which folkway created the pop drinkers? (Note that it really was culturally appropriate to split off West Virginia from Virginia way back when).