Ancient Greek Helmets
According to historical sources there were 8 types of ancient Greek helmets.
Kegel Type Helmet
"Kegel type Helmet, 750-00 BC, probably Southern Italy (left); with Repaired Kegel type Helmet, 780-20 BC, near Argos (right)"
"Kegel type Helmet, 780-20 BC, Argos, Greece (left); with Kegel type Helmet, 750-00 BC, probably Southern Italy (right)"
Illyrian Type Helmet
"Illyrian type Helmet, 535-450 BC, Trebenista, Macedonia (left); with Illyrian type Helmet, 450-20 BC Horigi-Vaphiohori, northern Greece (right)"
"Illyrian type Helmet, 600-550 BC (left); with Illyrian type Helmet, 480-00 BC (right)"
Corinthian Type Helmet
"Corinthian type Helmet, 525-450 BC (left); with Corinthian type Helmet, 550-00 BC (right)"
"Corinthian type Helmet, 550-00 BC (left); with Corinthian type Helmet, 525-450 BC, possibly the Peloponnese (right)"
Chalcidian Type Helmet
"Chalcidian type Helmet, 350-250 BC (left); with Chalcidian type Helmet, 350-250 BC (right)"
"Chalcidian type Helmet, 500-400 BC (left); with Chalcidian type Helmet, 475-350 BC, Arges riverbed at Budesti, Romania (right)"
Phrygian and Thracian Type Helmet
"Phrygian type Helmet, 400-300 BC Epiros, northwestern Greece (left); with Phrygian type Helmet, 400-300 BC (right)"
"Phrygian type Helmet, 400-300 BC (left); with Phrygian type Helmet, 400-300 BC (right)"
Attic Type Helmet
"Attic type Helmet, 300-250 BC, Melos, Greece (left); Attic type Helmet, 300-250 BC (right)"
"Attic type Helmet, 300-250 BC, mound grave at Gravani, Romania (left); with Attic type Helmet, 300-250 BC, Melos, Greece (right)"
Boeotian Type Helmet
"Boeotian type Helmet, 300-100 BC (left); with Boeotian type Helmet, 300-100 BC (right)"
"Boeotian type Helmet, 350-00, Ruse, Bulgaria (left); with Boeotian type Helmet, 350-00 BC, Nicopolis, Greece (right)"
Pilos Type Helmet
"Pilos type Helmet, 400-200 BC (left); with Pilos type Helmet, 400-200 BC (right)"
"Pilos type Helmet, 400-300 BC, Piraeus, Greece (left); with Pilos type Helmet, 400-200 BC (right)"
Source Information:
https://www.thecollector.com/ancient-greek-helmets-8-types-and-their-characteristics/