Units from Herods.
Herod always placed an importance on cavalry, and tried to always deploy them at a 1:5 relation to the infantry. Herod’s ‘sebastenoi’ was deployed at 500 cavalry and 3,000 cavalry, 1:6, however the Roman assistance sent in 57 BCE was 1,000 cavalry and 8,000 infantry, a 1:8 ratio (displaying the lack of importance the Romans placed on cavalry). There is little known about Hero’s cavalry but it almost definitely included cataphracts, in addition the light cavalry we do know of. There is evidence of a cavalry unit of 500 in the Babylonian fashion (fast, and carrying a bow), under the command of Zamaris.
Herod’s infantry formed the bulk of his army, and was highly effective. The infantry was formed mostly by both light and heavy infantry, with little usage of medium infantry. The light infantry was mostly Itruraean archers, which were apparently well known across the middle east and the heavy infantry were mostly Jewish, armed in the Roman fashion. The ‘sebastenoi’ have been discussed at length already but basically they were 3,000 heavy infantry that were armed almost identically to the Romans (and after Herod’s death they formed Roman auxiliaries).
https://onlyphysics.org/the-army-of-herod-the-great-39-bce-4-bce-roman-army-jewish-troops/