Emmylou's a folk singer, she just got an association with country and Nashville through her connection with Gram Parsons. How could anyone not love Emmylou's sublime voice? As to her sounding like any other 'country' music, it depends entirely on what album you're listening to. Elite Hotel sounds nothing at all like Wrecking Ball, which is a rock album produced by Daniel Lanois. Red Dirt Girl is an alt. Country album, and Stumble Into Grace isn't really country at all, in fact I don't know quite how to define it. Lovely album. She's also absolutely beautiful in the flesh, too. Linda Ronstadt is another country-ish singer who transcends the genre by singing Spanish, jazz, pop. JD Souther is worth checking out, listening to a best of at the moment as it happens, and La Ronstadt is on one song as well. They were a couple at one point. Lovely man, saw him in a 300 capacity venue and he was fantastic, signed my '72 vinyl copy of Black Rose which I was dead chuffed about. He co-wrote a number of the Eagles greatest hits. Patty Griffin gets called country, and she tours with Emmylou and Shawn Colvin but she's far too diverse in style to be really country, her album second Flaming Red was done with an LA punk band...
George Jones is Country and Western, a pure Nashville 'Hat Act', all about the show like Tom Jones and such. I love country/alt.country, but the showbiz Nashville stuff, all rhinestones, cowboy boots and big hair leaves me cold.