Big Dummies sounds like the best story so far…
Had Britain settled for a negotiated peace in June 1940 Hitler would not have waited as late as he did to kick off Barbarossa and therefore would likely have captured Moscow.
Cut off without allies and having lost Moscow the Japanese may well have been tempted to take chunks from a now weakened Russia.
We could play these games all night, Harry Turtledove’s books are worth a look if you like alternate history. You want Hitler kicking off WW2 early or alien reptile invaders in WW2? You’ve got it!
There is also an Aussie author who wrote a story about a 21st century carrier group getting transported back to the Battle of Midway…