The destroyers are Fletchers, although they're a little off in terms of the AA fits.
Early war Fletchers only carried a single twin 40mm between turrets 3 and 4, 2x20mm on each side on the main deck below the after torpedo tubes, and 2x20mm in tubs just aft of turret 2. Some added a second 40mm twin to the fantail where the 3x20mm are presently.
After late '43, Fletchers started appearing with 3x20mm on the fantail, a 40mm twin between turret 3 and 4, 2x20mm on the waist positions, 2x40mm twins between the stacks, and 2x40mm twin in the forward tubs.
By late war, many ships were receiving Emergency AA fits. This replaced single 20mm with twins, so 6x20mm on the fantail, 8x20mm on the waists. The twin midship 40mm MkI mounts were replaced with quad 40mm MkII mounts between the funnels, and the forward torpedo tubes were landed and replaced with a FCD platform. The twin 40mm between turret 3 and 4, and the forward tub MkI 40mm were retained.
J