Your graph disproves your assertion the economy was rebounding and would have done so without the war. We would not have spent the money on lend lease as we did full scale war.
No, the graphs show that employment was already higher than pre-Depression and unemployment was rapidly moving down, before December 7, 1941.
Unemployment continued to fall in 1942, all based on military spending approved BEFORE December 7, 1941.
So I’m not saying the US economy would have done as well without war as with, only that it was already on pretty good shape by end of 1941 and would have stayed good even absent Pearl Harbor.