Back in FL we called everything a Coke. When someone asked if you wanted a coke it wasn't strange to ask "What kind?" in return.
I remember a Scottish lad I was in the army with, he asked if I wanted a juice. I asked what he had thinking maybe orange, or Apple. He said " coke or lemonade". Myself. In England. Pop is far more common than soda. But it's rare anyone uses a collective name for all fizzy drinks. Normally if there was options and you were asking someone what they wanted. You'd probably start listing all the variants. Seems silly now I've read this piece. I'm gonna bring the term soda to the forefront.