To add a different perspective, the best “non cover”, many are familiar with Steve Miller Band’s cover of”Jet Airliner”. The original tune was written by Paul Pena several years earlier. In my opinion his tune not only is better than the cover, it features some of the best blues based rock guitar playing I’ve heard.
I agree. Never heard it before but that original is better.
In the same category, here are two originals from Jack Lee that I might likelike better than the covers: