Wire gauge thickness of Anker USB charging cables?

Does anyone know what gauge (AWG) of wire Anker uses in their usb charging cables? You would think it would be an advertised feature.

I have Anker cables with vastly different diameters.

They had the number in some of the picture next to the cables. Normally, from what I saw, 6ft cables are using 24AWG for charging and 10ft is using 21 (or 24)AWG. 3ft have 24AWG mostly. The connections also have some resistance, that contributes to the power loss. Some chargers also have voltage boost to compensate for the loss of the charging cables.