I would list Boody Rogers, Basil Wolverton, Jim Tyer, and Holly Chambers. All four of them were wild, psychadelic, and very non-conventional. Had they been around during the late 1960s and early 1970s, they'd have led the way in the underground movement, along with Robert Crumb. They all could have worked for E.C. and "Mad Magazine" without needing to change their style. Chambers was known for being a druggy, and his funny animal comics looked the part. Wolverton's artwork looked like he was high when drawing. Rogers' art looks like he was trying too hard to LOOK like he was on drugs. But his wild ideas were way-way out, and things a "normal" person would never think of. Frazetta also had a little of that in his funny animal work at times. Cecil Jensen, who wrote The newspaper strip, "Elmo", had pretty wild ideas in his sense of humour, having his main character outrageously honest and blunt, but also outrageously stupid. The way everyone in the strip reacted to him was extremely unexpected.