I can see that @tostadosunidos. Those Southerners have an unfair advantage ;-) . Have you heard Patsy’s very early recordings, before Owen Bradley began producing her? She was much more Hillbilly early on, almost Rockabilly (as were guys like George Jones and Johnny Horton, and the great Wanda Jackson, whose two recent albums were produced by Jack White!).
Another great early Rock ’n’ Roll act recorded in good sound were The Everly Brothers. Both their Cadence (late-1950’s) and early Warner Brothers’ albums (1960 onward) possess good recorded sound, especially on the Ace Records (UK) LP’s pressed in the 1980's.