Representations of barbarians form 5th century

[Flavivs Aetivs]

I see lots of Manica... I wonder if that was possibly influence from the Dacian wars? Surely in the Roman equipment they looted there would have been manica, and they were on the old Dacian border. It makes sense in a sense, in that the Goths wouldn't have been able to give their medium-class soldiers full armor, but they would have used helmets, greaves, and arm-guards to protect their exposed body parts.

The bowcases are the same as the ones from the Vergilius Vaticanus and Santa Maggiore

The Muscle cuirass on the bottom-left plate is different than the one on the bottom-middle plate, so I would suggest the one on the left is chainmail or scale represented as a muscle cuirass, while the one in the middle is an iron muscle cuirass.

I'm a bit baffled by the half-circle objects, they look like the old Greek Pelta.