My personal favorites include:

Ace Comics: Lightning Comics (1940), Super-Mystery Comics (1940), Four Favorites (1941)

Centaur Comics: Amazing Mystery Funnies (1938), Keen Detective Funnies (1938), Amazing-Man Comics (1939)

Fawcett Comics: Master Comics (1940), Whiz Comics (1940), Bulletman (1941), Captain Marvel Adventures (1941), Spy Smasher (1941), Wow Comics (1941), Captain Marvel, Jr. (1942), Captain Midnight (1942), The Marvel Family (1945), Mary Marvel (1945)

Fiction House: Fight Comics (1940), Planet Comics (1940)

Fox Comics: Blue Beetle (1939), Mystery Men Comics (1939), Wonderworld Comics (1939), Phantom Lady (1947)

Harvey Comics: Speed Comics (1939), Green Hornet Comics (1942), All New Comics (1944), Black Cat Comics (1946)

Holyoke Publishing: Captain Aero Comics (1941), Cat-Man Comics (1941), Suspense Comics (1943)

Lev Gleason Publications: Silver Streak Comics (1939), Daredevil Comics (1941), Boy Comics (1942)

MLJ Comics/Archie Comics: Top-Notch Comics (1939), Shield-Wizard Comics (1940), Pep Comics (1940), Zip Comics (1940), Black Hood Comics (1943)

National Allied Publications, Inc./All-American Publications/DC Comics: Detective Comics (1937), Action Comics (1938), Adventure Comics (1938), Superman (1939), All-Star Comics (1940), Batman (1940), Flash Comics (1940), Green Lantern (1941), World's Finest Comics (1941), Wonder Woman (1942)

Nedor Comics: Exciting Comics (1940), Thrilling Comics (1940), America's Best Comics (1942), The Black Terror (1942), Wonder Comics (1944)

Novelty Press: Blue Bolt (1940), Target Comics (1940)

Prize Publications: Prize Comics (1940), Headline Comics (1943)

Quality Comics: Smash Comics (1939), Police Comics (1941), Plastic Man (1943)

Timely Comics/Marvel Comics: Marvel Mystery Comics (1939), The Human Torch (1940), Mystic Comics (1940), All Winners Comics (1941), Captain America Comics (1941), Sub-Mariner Comics (1941), USA Comics (1941), Blonde Phantom (1946)