Anything we could imagine scraping up would be highly speculative and not at all revealing of much. We don't even really know where the US would have dropped its third atomic bomb on Japan if the war had gone on, even though they were preparing to send it to Tinian right before Japan surrendered. These kinds of operational decisions require a lot of planning not only about the state of the war at the time the weapon was ready (which was never, in the case of Germany, since they did not have an atomic bomb production program), but also the nitty-gritty of how delivery would work in practice (e.g. what kinds of capabilities would be available at that point in the war). The US didn't even start looking at possible Japanese atomic targets seriously until May 1945, when they were only a few months away from having their first atomic bombs.