You've got several of the topics I would consider the most confusing listed there already (animation, perspective, lighting). I'd add names and categories of different art styles, which are needed when researching a style or advertising for an artist who can do that style. If I was being formal, I'd call it "Art Style Nomenclature and Phylogeny" lol. Also, anatomy is typically separated into human and animal, and perspective is typically separated into architectural and organic.
I was kinda confused by contrast/depth too. I'd normally consider visual depth to be the intersection of perspective and shading; that thing sidewalk artists and optical illusion artists are amazing at. Contrast is more color theory and usability/ergonomics.
This is for that crossbones thing, I assume? I was just trying to figure out if I should offer my Deviant Art tutorials and my developer journal material to be harvested somehow for use with that. I've written stuff about concept art, the art side of character design, clothing design, human anatomy and proportions (mainly as related to anime style and as related to drawing skinny and fat characters rather than the athletic ones art books always use as examples). Plus all the design, design document, and story-writing related stuff.