Personally, I enjoy the singing of many/most of the perps cited. It's that unusual quality that makes the song more charming. Another example is the Band--Rick Danko and Richard Manuel had quirky voices which I like, but I understand why they are not everyone's cup of tea. Levon Helm sounded like a country hick but he had a great voice for the material he sang. They had each other plus Robbie Robertson and Garth Hudson playing behind them, not a bad lineup of players.
As far as Dylan covers: the all-time fave is Hendrix' version of All Along the Watchtower. And check out Judy Collins' cover of I Pity the Poor Immigrant, with Buddy Emmons wailing on the pedal steel guitar.
As far as Dylan covers: the all-time fave is Hendrix' version of All Along the Watchtower. And check out Judy Collins' cover of I Pity the Poor Immigrant, with Buddy Emmons wailing on the pedal steel guitar.