What are some of the false myths propagated about Superman over the years? I'll start with one.
Its widely believed that Captain Marvel started flying from the very first comic he appeared in and thus wasn't a clone of Superman. Also Superman copied flight from Captain Marvel.
This is false. Captain Marvel started flying in Whiz Comics 5 (June 1940). Superman was flying in his radio show starting in April 1940 which was the likely source of his flight.
Here's some scans of Cap leaping from Whiz Comics 2,3 and 4.
Its clear Captain Marvel was a blatant clone.