>>47714587Snorunt is based on this, though probably not primarily. There is an old traditional Japanese snow hat with a pointy shape like this whose name i don't remember. Said hat is said to be worn by the "child of the yuki-onna" which is a lesser-known thing.
In other words they probably already had Froslass in mind when designing Snorunt, hence it being the hat of the yuki-onna child. Then delayed Froslass to Gen IV for whatever reason.