Charley Burley, Lloyd Marshall, Eduardo Lausse, Bomber Graham, Jock McAvoy, Joey Giambra, Charles Humez, Lazlo Papp and Florentine Fernandez all in with a shout
Depends how you feel about coloured champs, belt-holders, title-claimants etc. Being strict about the lineal title i'd have: 1 - Mike Gibbons 2 - Charley Burley 3 - Holman Williams 4 - Freddie Steele 5 - Fred Apppostoli However, all of these fighters held some sort of belt or claim. If you want a list of fighters with no claim, ever, at all...hard. How about - 1 - Bert Lytell 2 - Lloyd Marshall 3 - Billy Conn 4 - Georgie Abrams 5 - Jack Chase Or something.
I always seem to have a recurring list in my head of: Holman Williams Charley Burley Archie Moore Eddie Booker Jack Chase Len Harvey Georgie Abrams Lloyd Marshall Dave Sands Spider Webb Joey Archer Luis Rodriguez Bennie Briscoe
Wasn't Steele officialy recognized as the lineal in 1938? http://boxrec.com/media/index.php/International_Boxing_Union
During that era there was no lineal champ as the trio of Thil, Steel and Apostoli never managed to get a fight under the limit.