Mike,
I forgot in last night's post to add that the aft deckhouse configuration for Barton's tubs, etc "should" resemble Woodworth's (another Bethlehem built Benson sister) on this thread on page 3. It can't be a "blanket" assumption that ALL Bethlehem-built Bensons were configured like this once the USN Home Navy Yard for the ship completed the ship. The Bethlehem splinter bulwarks appear to be the original heavier gage specified but to a different shape or style from the rest of the Benson-Gleaves builders. The USN changed the spec's for the bulwarks to a "lighter/less armored(?)" gage to save weight. Checking photos, if they exist for periods of interest, to verify configuration is best. Barton has few photos since she was lost about two months after arriving in the Pacific war zone and I have noticed that the BuShips people seemed to PURGE photos of ships lost from their files ... not always and the photos can be found elsewhere, but it is frustrating.
Also, there are photos (I have not scanned them yet, but they can be seen on Navsource) of Laffey that also had this general configuration ... but pay attention to differences. The searchlight was not installed on the aft deckhouse on Woodworth or Laffey or the West Coast built Bethlehem Bensons. This is something I'm unsure of on Barton, in that she was delivered with the searchlight on the aft deckhouse, but Boston Navy Yard "could" have relocated it to the location aft of the second stack. But that is very unlikely, since the sister before her (Bancroft) and after her (Boyle) retained the aft deckhouse location for the searchlight after departing Boston. In January 1943, Boyle had her searchlight moved forward off the aft deckhouse. If you check photos of Boyle, she was configured with the same bulwark shapes for her twin 40-mm mounts as was installed originally on the non-Bethlehem built ships.
This dual-class is pretty frustrating to make blanket assumptions about configurations. It almost seems they are 96 ships with about 300 configurations.