[History/Sources] What evidence of linothorax use by "Greeks"?

[Titus Marcellus Scato]

When you say 'Greeks', I assume you mean 'southern Greeks'? Athenians, Spartans, Epirotes, Corinthians, Thebans etc.

Not including Macedonians, Thessalians, or Thracians, who weren't considered 'Greek' by the Athenians, but Hellenised barbarians - or the later Seleucids, Ptolemies, Baktrians, etc, who aren't 'Greek' either but 'Hellenic'.