>>104456804>By this definition, of course, shows like Arthur are Tumblr style
You mean by the arbitrary definition you made up. Arthur is not "tumblr" because the characters have actual form. The blue jeans lay in a natural way. The proportions, while children, are somewhat realistic. You would never in 100 years find a character with legs as detailed as Muffy's in modern programming. I'm focusing on the legs because Arthur's bodies are the most realistic part, with cartoony heads on top, but my point remains. Even their hands reflect real world hands, and aren't tube-ends with little vienna sausages gormlessly poking out.