There are quite a few humor and teen titles on the site that should be generally acceptable for showing to kids now-a-days.
Here's a few you might want to check out-
Dell-Henry Aldrich, Charlie McCarthy, Smiity, Howdy Doody
Columbia- Sparky Watts
American Comics Group- Cookie, The Kilroys, Giggle Comics, Ha Ha Comics
Better- Super Mouse, Little Angel, Barnyard Comics, Coo Coo Comics, Goofy Comics, Happy Comics
MLJ- Suzie Comics, Super Duck
Toby- Super Brat. Meet Merton
Magazine Enterprises- Tick Tock Tales, The Brain, Little Miss Sunshine, The Pixies
Lev Gleason- Adventures in Wonderland, Squeeks, Uncle Charlie's Fables
Best
Joe