Index of artists, ordered by quality of their 20th best song

The Beatles
Bob Dylan
Rolling Stones
Prince
Aretha Franklin
Van Morrison
Marvin Gaye
The Beach Boys
Elvis Presley
Madonna
Miles Davis
Neil Young
The Clash
Public Enemy
Stevie Wonder
Jimi Hendrix
R.E.M.
Elvis Costello
Talking Heads
Bob Marley
The Velvet Underground
The Who
Joni Mitchell
PJ Harvey
Bruce Springsteen
Nirvana
Radiohead
David Bowie
Drive-By Truckers
Björk
The Kinks
Pink Floyd
Michael Jackson
Led Zeppelin
U2
The Byrds
The Doors
Siouxsie and the Banshees
The Smiths

Siouxsie and the Banshees

Including solo Siouxsie but not "Cish Cash", plus I never listened to The Creatures. Tumblr notes.

1. Happy House (Kaleidoscope)
2. Hong Kong Garden
3. Melt! (A Kiss in the Dreamhouse)
4. Into the Light (Juju)
5. Spellbound (Juju)
6. Jigsaw Feeling (The Scream)
7. Mirage (The Scream)
8. Cannons (Tinderbox)
9. Dazzle (Hyaena)
10. Arabian Knights (Juju)
11. Heaven and Alchemy (solo, Mantaray)
12. Party’s Fall (Tinderbox)
13. Cascade (A Kiss in the Dreamhouse)
14. Cities in Dust (Tinderbox)
15. Voodoo Dolly (Juju)
16. Green Fingers (A Kiss in the Dreamhouse)
17. Dear Prudence (Hyaena)
18. Christine (Kaleidoscope)
19. Carcass (The Scream)
20. About to Happen (solo, Mantaray)

Drive-By Truckers

Isbell was good company to keep

1. Outfit
2. My Sweet Annette
3. The Company I Keep
4. Two Daughters and a Beautiful Wife
5. Carl Perkins' Cadillac
6. Hell No, I Ain't Happy
7. Birthday Boy
8. Three Great Alabama Icons
9. A Ghost to Most
10. The Day John Henry Died
11. The Man I Shot
12. Ronnie and Neil
13. A World of Hurt
14. Decoration Day
15. Marry Me
16. Puttin' People on the Moon
17. Bulldozers and Dirt
    
18. The Purgatory Line
    
19. TVA
20. Wallace
    

Michael Jackson

(Jackson 5 stuff excluded)

1. Don't Stop 'til You Get Enough
2. Billie Jean
3. Wanna Be Startin' Something
4. Beat It
5. Rock with You
6. Off the Wall
7. Black or White
8. The Way You Make Me Feel
9. I Wanna Be Where You Are
10. Got to Be There
11. Rockin' Robin
12. She's Out of My Life
13. Unbreakable
14. Can't Let Her Get Away
15. In the Closet
16. 5000 Watts
17. Smile
18. Thriller
19. Girlfriend
20. Shake a Body

Björk

1. Venus as a Boy
2. Pagan Poetry
3. Bachelorette
4. Human Behaviour
5. Hyper-Ballad
6. Joga
7. Earth Intruders
8. The Hidden Place
9. All Is Full of Love (Greatest Hits version)
10. It's Oh So Quiet
11. Army of Me
12. Big Time Sensuality
13. Undo
14. Hunter
15. Declare Independence
16. Cocoon
17. Triumph of a Heart
18. Unison
19. Violently Happy
20. Cover Me

The Kinks

1. Waterloo Sunset
2. Sunny Afternoon
3. Arthur
4. All Day and All of the Night
5. Lola
6. You Really Got Me
7. Victoria
8. Tired of Waiting for You
9. Fancy
10. A Well Respected Man
11. Plastic Man
12. Rosie Won't You Please Come Home
13. Complicated Life
14. Last of the Steam Powered Trains
15. David Watts
16. The Way Love Used to Be
17. A House in the Country
18. Shangri-La
19. Set Me Free
20. Alcohol

PJ Harvey

not much for either whoring or hustling these days

1. Good Fortune
2. You Said Something
3. Sheela-Na-Gig
4. 50 Ft Queenie
5. Down by the Water
6. A Place Called Home
7. Rid of Me
8. Big Exit
9. Long Snake Moan
10. C'mon Billy
11. The Sky Lit Up
12. Dress
13. The Whores Hustle and the Hustlers Whore
14. Angelene
15. Is This Desire?
16. This Is Love
17. To Bring You My Love
18. Rub 'til It Bleeds
19. O Stella
20. Meet Ze Monsta