I created a Spotify playlist dedicated to the original recordings of songs most known by (one of) their covers. The playlist is, "Blinded by the Cover." (See what I did there?) All tracks on this list were proposed by Din n Friends in the comments on a Facebook status update of Din's.
Aside from having some ripping tunes and (probably) some surprises, the list provides an opportunity to contemplate cultural musical appropriation. If you don't know what that is, please google it.
Disclaimers: While I vetted each entry for their "originality" on Wikipedia, I couldn't verify them all and have taken the commentir's word for it. One or two were known NOT to be the original. Rules/broken/made2b. Most tracks were shared as YouTube links so my Spotify selections may not be the same recordings. Some tracks are not on Spotify (or were not revealed by my searches ... not always the same thing). Track list (including omissions) coming Real Soon Now for anyone who doesn't believe in Spotify.