All Along the Watchtower by Hendrix is factually the greatest R&R cover of all time. It's not all that close either.
Dazed and Confused and When the Levee Breaks want a word with you in the 7-11 parking lot
Benatar's Wuthering Heights
Juice Newton's Angel of the Morning
Dazed and Confused is like a double whammy.
Original Song by Jake Holmes > Yardbirds Version > Led Zeppelin.
Also Led Zeppelin's Dazed and Confused guitar solo (one of the best of all time in my opinion) was originally, almost note for note, in a Yardbirds song "Think About It".
Jimmy Page didn't waste anything he thought was good.