I'll start some albums off for ya, though you haven't given any guidelines:
Kenna - "New Sacred Cow"
Sufjan Stevens - "Illinoise" (really every Sufjan Album though 🙄 )
Death Cab For Cutie - "Transatlanticism"
Tarkio - "Omnibus"
Medeski, Martin & Wood - "Combustication", "End Of The World Party (Just In Case", "It's A Jungle In Here", "Shack Man"
The Postal Service - "Give Up"
Return To Forever - "Where Have I Known You Before
Sigur Rós - "Takk..." (though you cannot go wrong with them)
The Whitest Boy Alive - "Dreams"
Then there's Bob Dylan. Robert Zimmerman is amazing in his 40+ year career, writing some of the most memorable and historic songs ever in American culture. You cannot go wrong with any of these albums, they all offer different spectrums of his ever-changing style and/or historical songs and I adore (Though I adore every Dylan album in its own way 🙂 ):
Bob Dylan - "Another Side Of Bob Dylan" , "Bob Dylan" , "Blonde On Blonde" , "Bringing It All Back Home" , "The Freewheelin' Bob Dylan", "Good As I Been To You", "Live At The Gaslight 1962 (if you have to pick only a few, pick this as one), "New Morning", "Nashville Skyline", "Street Legal", "The Times They Are A-Changin' ", .... it goes on and on.