Art,

"Is there anyone modern and on the radio and hyped by the big companies doing things like Hank Snow's train stuff & Jimmie Rodgers style songs or Blue Sky Boys tight harmony---or even the Louvin Brothers--maybe with more modern topics other than sensuality, sex and drugs? I don't mean isolated songs. I'm thinking of whole music careers starting out, now, in a rootsy-sounding veign and style."

The closest I can get to your description would be Emmy Lou Harris. The big record companies don't hype her like they do Darth Brooks (the dark side of country with a little 'c') but she sells well and they know it. I've heard her covers of Jimmie's "Miss the Mississippi" and the Louvins' "If I Could Only Win Your Love" on the so-called "country gold" station here. Wonder why the pop oldies stations are always playing Buddy Holly and the Everlys but the the country "oldies" stations never go back more than about ten or fifteen years?