Conceptually, I'm reminded of the story "A Colder War" where most of the major events of the Cold War play out but with the threat of nuclear weapons paling in comparison to the threat posed by Lovecraftian entities.
It's interesting to see how this one balances alternate vs. secret history, especially with something that poses as many issues as the bombings of Hiroshima and Nagasaki.
Appreciated the shout-out!