BUR #45979 has been approved by @nonamethanks.
create implication anatomy_study -> art_study
create implication color_study -> art_study
create implication lighting_study -> art_study
create implication material_study -> art_study
create implication pose_study -> art_study
create implication style_study -> art_study
create implication environment_study -> art_study
As the wikis for all of these tags say, they're all types of art studies