Johny CAsh, like Ray Charles, had developed a singing style that was described as a "Well tuned chain saw".
If you ever heard any early Ray Charles, he actually sounded a bit like Nat Cole. He worked on his be bop gutteral style,So did Johny Cash, these voices were the result of many years of hard work at sounding that way.
Kid Rock? I liked some of his stuff but a lot of his own work got derivative. Thats why hes doing WWE rasslin now