Mykale, a naval battle?

[MeinPanzer]

Im thinking of a different beam. the one I am thinking of shows 'Persians' fighting Lydian hoplites.

I don't think I've heard of this one. Can you provide some references to publications on it? The painted beams left in situ in the Tatarli tumulus from which the battle and funerary procession beams were taken do show Anatolian hoplites with war sickles (as well as lions, a procession of chariots and men on foot, winged bulls, and birds of prey attacking a feline), but those hoplites are not fighting Persians and are engaged in some sort of ritual dance.

Sake Tigrakhauda should be wearing Median clothing also as they lived in Iran.

Saka clothing was similar to Median costume, but was significantly different - compare the Saka represented on the Persepolis royal tombs and the apadana to representations of Persians. They wore long caftans instead of tunics, had pointed caps (the most noted difference in costume), and sometimes wore long trousers instead of leggings. However, on this they are dressed almost identically to their opponents, save for their distinctive caps, with short, long-sleeved garments, tight trousers, and separate shoes - exactly the costume which you stated was Anatolian.

Persian clothing didn't change from the time of the Neo-Assyrian Empire until the Parthians.

Persian costume did change over time. One major change is that by the late 4th c. BC, Persians wore their tunics double-belted, with a significant "overhang" of cloth between the two belts. This is not seen anywhere in representations of Persians, Greek or Iranian, until the later 4th c. BC. Furthermore, a significant change was the adoption of the caftan - a nomadic piece of costume - to replace the long-sleeved tunic by the early Parthians. Another change was the adoption of flowing breeches over leggings, which had obvious benefits for cavalry combat.