Greatest Fighters Never to Win a World Title?

Sam Langford has to be number 1.
I think Packey McFarland is next, followed closely by Charley Burley.

There's some other great fighters, but I'm really not sure who should go next. Who have you got? (or feel free to disagree)

Edit: For future reference here's who's been mentioned by people so far, a lot of these guys, probably most, fought at multiple weights (please say if I missed any)

Heavyweight
Peter Jackson
Joe Jeannette
Harry Wills
Sam McVey
Jimmy Young
Jerry Quarry
Zora Folley
Eddie Machen
Rex Layne
Ike Ibeabuchi
David Tua

Light Heavyweight
Lloyd Marshall
Jorge Ahumada
Ritchie Kates
Yaqui Lopez
Kid Norfolk
James Scott
Tiger Jack Fox
Billy Miske
Tommy Gibbons
Young Stribling

Middleweight
Sam Langford
George Benton
Holman Williams
Michael Watson
Joey Archer
Les Darcy
Bennie Briscoe
Tommy West
Georgie Abrams
Dave Sands
Eddie Booker
Jack Chase
Charlie Mitchell
Tony Mundine
Herol Graham

Welterweight
Charley Burley
Billy Petrolle
Armando Muniz
Bep van Klaveren
Billy Graham
Hector Thompson
Alfredo Urbina
Adolph Pruitt
Cocoa Kid
Hedgemon Lewis
Gil Turner
Clyde Gray
Ernie Lopez
Young Peter Jackson
Hector Thompson

Lightweight
Packey McFarland
Tyrone Everett
Kenny Lane
Lew Tendler
Ruben Castillo
Ruben Navarro
Antonio Amaya
Johnny Bizzaro
Pedro Montanez
Willie Joyce
Freddie Dawson
Jimmy Britt
Jack Blackburn

Featherweight
Jim Driscoll
Owen Moran
Percy Bassett
Art Hafey
Bernard Taylor
Nel Tarleton

Bantamweight
Alan Rudkin
Memphis Pal Moore
Jesus Pimental
Bernardo Carraballo
Famoso Gomez
Paul Ferreri

Flyweight
Newsboy Brown
Leo Espinosa
Halimi Gutierrez
Fernando Cabanela

 

I've never seen someone hold that opinion. Could you explain why you think it? Is it some of Langford's losses?

 

Aaron Pryor? Yeah WBA and IBF Super Lightweight titles