>>56629128the one where the giant is part of a trio with proto palkia and dialga is interesting because its from 2005, but it isn't accounted for in the diagram. so they did have some idea of proto-giratina, but didn't have something set in stone.
I mean there's such a huge difference between beta giratina and what we got, and beta giratina's name doesn't fit with the naming scheme of the others at all