As of recent I have been doing some research on what kind of helmets the Scythians wore in combat. I'm aware that they used Phrygian caps, Kuban helmets and headgear of Greek origin such as Corinthian, Chalcidian and Attic helmets. I have come across a group of helmets that I'm not very familiar with.
This illustration made by the artist Eugene Kray - //vk.com/id387122112
Stated that the illustrations are for specific archaeological finds. There's a list of places of excavation for each illustration.
How this typology of helmets common, don't know.
Here's how online-translator translates names:
Flake helmet.
Kuban type
Helmets Cimmerian ("Assyrian" types)
Helmets of Urartu
helmets antique types
helmets antique types
helmets antique types have been subjected to alteration
Helmets "Saka" types
Helmets "Thracian types"