People who named Fleischer Studios on their World War II draft registration cards, some of which may or may not have drawn for comics at some point:
Louis Adler
Ernest Walter Arcella
Frank Bacher
John Anthony Baker
Thomas Louis Baron
James Hamel Beatty
Verlin Cecil Blackwell
Larz Eugene Bourne
Willard Gustav Bowsky
Frederick Francis Brent
Sam Buchwald
Roy Oral Burke
John Early Burks
Hamilton Butts
Orestes Calpini
Jose Rodrigo Carreon
John Douglas Chaffin
Alfred Clark
Gilbert Rionda Clarke
Alden Eugene Craver
John Martin Cuddy
James Henry Culhane
Walter Raymond Cunningham
Mike David
James Faris Davis
Joseph Marbelle D?Igallo
Oliver Francis Drebert
Irving Dressler
Larry Moore Duncan
John Harold Ehret
Frank Howard Lewis Eley
Herschel Clair Ellison
Frank Xavier Endres
Robert Henry Esslinger
Vincent Francis Fago
Thomas Benson Farish
Jacki Fern
Otto Feuer
Milton Irving Fine
Leo Herbert Fisk
Everett Owen Fitzgerald
Lester May Fleischen
James Edward Fortner
Herbert Frankel
Nathan Friedland
Stanley Irvin Friedlander
Robert Reaney Friis
Donald William Gammon
Woodrow Wilson Gelman
William Lanen Gerke
George Germanetti
John Paul Gibbs
Arnold Benjamin Gillespie
Thomas William Golden
Earl Purdy Goldthorp
Arthur Greenbaum
Morton Greenbaum
Reuben Grossman
Lloyd Charles Von Haden
Samuel John Head
Henry Heilbrunn
David Parsons Higgins
Winfield Scott Hoskins
Calvin Henry Howard
Bernard Howson
William Ballinger Hudson
John Immerman
Thomas Antisell Johnson
Arnold William Kivela
Earl Klein
Seymoor Holtzer Kneitel
Abner Matthew Kneitel
Walter Harold Kraemer
Richard Lang
Bernard Leiter
George Lester
Bernard Levin
Eli Loab Levitan
Lawrence Lippman
William Robert Little
Harold Ellsworth Lockwood
Anton Loeb
Lawrence Lopez
Edwin Francis Loughlin
James Lunnon
Milton M Lustig
William Russell Madden
Marwill Richard Frank Mann
Leonard Louis McCormick
Eugene Ralph McGregor
Jack Bennett Mercer
Richard Shane Miller
Thomas Ancrum Moore
Jay Morton
Stephen Paul Muffati
Paul Edwin Murphy
Frank Napoleon
John O?Neill
Anthony Nicholas Oriolo
Joseph Dominick Oriolo
Jack Orzarkawitz
John Daniel O?Sullivan
George Anthony Ottino
Frank Joseph Paiker
Philip Joseph Di Paola
Anthony J Di Paola
Herbert Harvey Patterson
William Culpepper Pierce
Edward Stacey Pierce
Henry Roehming Rehe
Harold Herman Robins
Lodowick Louis Rosswer
Harry Ryterband
Leland Sanford
Frank Preston Scheidenberger
Erich Friedrich Theodor Schenk
Charles Henry Schettler
Robert Israel Schwartz
Edward Shane
Gordon Augustine Sheehan
Howard Irving Smith
Maxie Smith
Benjamin M Solomon
Abraham Albert Spar
Isidore Herman Sparber
Irving Spector
Samuel Stimson
Maurice Sussman
Hilmer Swens
Louis Philip Sylvester
William Talbott
Nicholas D Taturi
Herman Taylor
Alfred Taylor
David Tendlar
William Turner
James Harold Tyer
Andrew Valentine
George Christian Waiss
Myron Waldman
John Charles Walworth
Brandon Bruce Weaver
Henry Richard Weber
Carroll Orville Wessler
Harry Charles Wichman
Robert Leslie Wickersham
Willie Charlie Williams
John Richard Williams
John Oswald Willis
Jesse George Witmer
Milton Samuel Wohl
Harry Virgil Wylie
Alma Fay Young
George Douglass Young
Source:
https://www.fold3.com/search?keywords=Fleischer+studios&general.title.id=816:WWII+Draft+Registration+Cards