Some great artists that I have compilations from but not proper studio albums.
America - History
The Animals - Retrospective
Badfinger - The Very Best of Badfinger
Bill Haley - Bill Rocks
Blondie - Greatest Hits(Sound & Vision)
The Byrds - 20 Essential Tracks
Carl Perkins - The Complete Sun Singles
Chuck Berry - The Great Twenty-Eight
Dave Brubeck - Greatest Hits
Dean Martin - Greatest Hits: King of Cool
Dick Dale and the Del-Tones - King of the Surf Guitar
The Dillards - There is a Time(1963-1970)
Don Ho - Gold
Duane Eddy - The Essential Recordings
Eddie Cochran - Somethin' Else: The Fine Lookin' Hits of Eddie Cochran
Electric Light Orchestra - The Very Best
Elmore James - King of the Slide Guitar
Elvis - The Sun Sessions and 50 Worldwide Gold Hits Vol. 1
Etta James - The Heart of a Woman
Faces - Good Boys When They're Asleep
Frank Sinatra - The Very Best
Hank Williams - Greatest Hits
The Hollies - Greatest Hits
Iggy Pop - Nude & Rude
Jim Croce - Photographs & Memories
Joe Ely - The Best of
John Denver - Definitive All-Time Greatest Hits
Leadbelly - The Definitive Leadbelly
Link Wray - Rumble! The Best of Link Wray
The Monkees - Greatest Hits and More Greatest Hits
Patsy Cline - Greatest Hits
The Ramones - Loud, Fast: Their Toughest Hits
Robert Johnson - The Complete Recordings
Roy Orbison - For the Lonely: 18 Greatest Hits
The Staple Singers - The Best of
Them - The Complete Them 1964-1967
The Turtles - Greatest Hits
Waylon Jennings - Ultimate Waylon Jennings
Woody Guthrie - Hard Travelin': The Asch Recordings Vol. 3
The Yardbirds - The Very Best of the Yardbirds
The Zombies - Absolutely the Best
Additions to my compilation list in the last couple years:
The Association - Greatest Hits!
Billie Holiday - Lady Day: The Best of Billie Holiday
Blaze Foley - The Dawg Years(1975-1978)
Bob Wills - Country's Legendary Guitar Genius
Buck Owens - Greatest Hits
Buddy Holly - From the Original Master Tapes
Candi Staton - Candi Staton(2004)
Carpenters - The Singles(1969-1973)
The Carter Family - Greatest Hits(1927-1934)
The Creation - Our Music is Red With Purple Flashes
Gene Vincent - Gene Rocks
Glen Campbell - 20 Golden Greats
Hank Williams - 40 Greatest Hits
Jan & Dean - Surf City: The Very Best of Jan & Dean
Jerry Reed - The Essential Jerry Reed
Jethro Tull - Original Masters
Jimmie Rodgers - The Essential Jimmie Rodgers
Joe Cocker - Gold
Kris Kristofferson - The Essential Kris Kristofferson
Lightnin' Hopkins - Nothin' But the Blues
The Long Ryders - Final Wild Songs
Mississippi John Hurt - The Complete Studio Recordings
The Outlaws - Best of the Outlaws: Green Grass and High Tides
Ozark Mountain Daredevils: The Best Of
R. Dean Taylor - Essential Collection
Ramblin' Jack Elliott - The Essential Ramblin' Jack Elliott
Ray Price - The Essential Ray Price(1951-1962)
Sammy Hagar - The Essential Red Collection
The Sir Douglas Quintet - The Best of Doug Sahm & SDQ(1968-1975)
Woody Guthrie - The Asch Recordings, Vol. 1-4
Also picked up studio albums from America(self titled), The Byrds(Notorious Byrd Brothers, Sweatheart of the Rodeo) and Link Wray(Three Track Shack) that will make it on my next updated list.
new additions as of 3/20/19
Wilson Pickett - A Man and a Half
Charlie Patton - The Best of
Son House - The Original Delta Blues
Slim Harpo - The Excello Singles Anthology
The Four Tops - Gold
The Box Tops - The Ultimate
Billy Joel - Greatest Hits Vols. 1 and 2
Mitch Ryder & The Detroit Wheels - Rev Up