Aside from thickness and stated composite materials.....

(I don't think caps was composite unless im forgetting something)

....but aside from thickness and composites it's all the same material.

(Panthers habits is nanites but it matched the shield, could scratch the sheild, and take Thanos's thrown blade, and took vibranium knife hits from panther and killmonger, and a Dora, so panther habit nanites scale imo, wouldn't make sense for Suri to make a weaker habit)