I would like to suggest zombies of second kind. This is a person with inverted spectrum. It even could be my copy, which speaks all the same philosophical nonsense as me, but any time I see green, he sees red, but names it green. Is he possible?
Such an entity is possible, but would not be an atom-exact copy of you.
I didn’t say I knew which parts of the brain would differ, but to conclude therefore that it wouldn’t is to confuse the map with the territory.