While I’m thinking about naval pieces…
I think the obvious cruiser choices would be either the Cleveland (CL) or Baltimore (CA) class. The Wichita is a bit of an odd choice to my way of thinking, FMG, since it was a one-off (though it is so similar to the Baltimore class that on this scale that’s probably not a big deal.) The New Orleans was actually a CL, not a CA, IL, though some would argue that the large 6"-gun allied CL’s were the equal of any CA… (Some say the US ones were even better with their rapid-firing main guns…) But anyway, my thought is that the “reinforcements” we bring into the fray should reflect the sort of reinforcements in any given category that the various powers either did, or would have, brought into the fray as the war went on, not the obsolete older equipment that most had to begin the war with. For me, that means Clevelands or Baltimores in the cruiser category.
Now, in the DD category, the oob piece already is the Fletcher, probably the most iconic DD class of the war, so I say go with the next one down the line, the Sumner class, which would also be a (slight) upgrade, since their twin turrets gave them a little more firepower against both air and sea targets. Would that extra 5"/38 be enough to be worth another IPC and another notch up on a 12-sider…? Arguable either way, I’d guess, but it would at least give us the option for house rules purposes plus a little more visual variety in the fleet if one’s own answer to this Q is “no.”
For the TD, I think the M36 Jackson is a better choice than the M10, as the M10 was only a little better, firepower-wise, that the early-war Shermans and no advantage at all against the late-war Shermans. Speaking of which, FMG, I’m hoping your Shermans will be late-war models with the longer guns, which will give us more house rules flexibility. btw, both the M10 and the M36 TD were based on the Sherman chassis, and the M10 cannon was the same as the 76mm used on late-war Shermans, so with an M10 you basically get a late-war Sherman without a roof! No point in that, I say! If you insist on giving us a TD instead of a Pershing, at least give us an M36 with its excellent 90 mm!