On cruisers, the oob Portland looks just like the larger Northampton class and almost like your recomendation, the New Orleans class. One of the newer flush-deck designs… Wichita/Baltimore/Oregon City CA’s or Brooklyn/St. Louis/Cleveland/Fargo CL’s would be far more distinctive from oob.
Note on the distinctitive US WW2 ship “style”: All post-'36 US designs, BB, CB, CA, CL, DD… all of them, had that classic flush-deck look and all of those flush-deckers just simply “look right” next to each other. These are the “Flush-deck” classes, in order, by category, with not-builts and too-late-for-actions noted in parens and my pics for FMG bolded, FYI:
BB: NC/SD/Iowa/Montana (last not built)
CB: Alaska
CA: Wichita/Baltimore/Oregon City/Des Moines (last too late for action)
CL: Brooklyn/St. Louis/Cleveland/Fargo/Worcester (last too late for action)
CLAA: Atlanta/Oakland/Juneau
DD: Fletcher/Sumner/ Gearing
I think FMG should do all “flush deck” US ships designs, as they would look like a set, like they “belong” together and aren’t just a hodge-podge collection. Not that he has to do the last one in the line if it was an “almost built” or a “too late for action” model… And I don’t think he’s interested in the “tweener” CB or CLAA categories. But there are 2-3 choices in every other category that saw plenty of action. Then he or someone can then later do a set of early-war and/or rare/ tech units. But my bolded recomendations all were built in #'s and saw decisive action. Yes, they’re all “late war” but the US didn’t even get into the fight until the “mid-to-late” war period had started. Remember, Pearl Harbor was at the end of 1941, not its beginning… the end of 1942 saw the US and the end of its first of 4 years at war. Ships coming out in 1943 aren’t that “late” from a US perspective.