Ry Cooder recommendation...

The following two titles will not qualify as “stripped down”, but certainly worth consideration:

 

Little Village

Buena Vista Social Club

 

The following two titles are both movie soundtracks and will come somewhat closer to your criteria:

 

Music from the Film Cal

Crossroads

 

Cheers,

Chicken Skin Music - a record that will reward listeners forever.

Ditto to all the recommendations above and I'll add Paradise and Lunch. The man's a national treasure.

Many of Ry's albums are pretty eclectic. He liked to do old depression-era stuff, gospel, calypso, and world music. He sings the lead vocals on much of his music and, while an adequate singer, his singing is not his strong suit.
There is a 2-CD set of his soundtrack work called Music By Ry Cooder which includes a lot of the solo slide guitar that you're referring to. 

I like that many of his LPs each go in a different direction. Paradise & Lunch is my fav, sorta straight folk rock including nice cover of Stand By Me. 
Chicken Skin Music features Hawaiian guitar masters & a beachy feel.
Jazz is awesome sonically, early big band Broonzy, CottonClub flavor.
Bop Till You Drop, straight 50s inspired R 'n R.
Paris, TX soundtrack for that tumbleweeds blowing down the highway, pour me another tequila craving.
Meeting By The River - Like if George Harrison never returned from India.  
Can't leave out grammy winning Buena Vista Social Club, old school Cubano/Latino party for sure. Cheers,
Spencer