Actually when putting Jimmy Stewart into the frame of reference they were on opposite poles entirely. The only similarity was that they both were fliers.
Lindberg was an apologist for the Nazi’s and just wholesale appeasment/isolationist oriented.
Stewart was an honorable bomber pilot who took the fight to Charlie’s buddies over there in the Thrid Reich.
I think he saw him as Jimmy Stewart, because Stewart portrayed Lindbergh in “The Spirit of St Louis.”