Hey Keith, glad you found this thread. Maybe you can fill in some of the more obscure issues.
I've been keeping up with our list. Here's what I have to date. Note that I don't havet the Peter Panda numbers, and I haven't spelled out the Seadevils issues (they're not all greytones, although most are):
Adventures of Rex the Wonderdog 31, 38, 39, 42
All American Men of War 35, 81, 100, 110, 111
All Star Western 96, 102, 103, 109
Big Town 46
Brave and the Bold 18, 21, 22, 23, 44
Challengers of the Unknown 11
Detective 239
GI Combat 44, 51, 69, 75-104, (!!!!!!!!!!!!!) 109, 113, 119
Green Lantern 8
Hopalong Cassidy 124
House of Mystery 92, 93
My Greatest Adventure 17
Mystery in Space 36, 40, 45, 46, 55
Our Army at War 45, 49, 57, 60, 124, 126
Our Fighting Forces 20, 71
Peter Panda ?
Sea Devils 1-
Secret Hearts 59
Showcase 3, 25, 27, 28, 29
Star Spangled War Stories 45, 122,130
Strange Adventures 80, 110, 143, 151
Tales of the Unexpected 15, 17, 43
Three Mouseketeers 6
Tomahawk 65
Western Comics 64, 69, 71, 81, 82
Lets not forget these contenders: