Folk / Outsider

From Wikipedia: Outsider art is art by self-taught or naïve art makers. Typically, those labeled as outsider artists have little or no contact with the mainstream art world or art institutions. In many cases, their work is discovered only after their deaths. Often, outsider art illustrates extreme mental states, unconventional ideas, or elaborate fantasy worlds.

The term outsider art was coined by art critic Roger Cardinal in 1972 as an English synonym for art brut (French: [aʁ bʁyt], "raw art" or "rough art"), a label created by Frenchartist Jean Dubuffet to describe art created outside the boundaries of official culture; Dubuffet focused particularly on art by those on the outside of the established art scene, using as examples psychiatric hospital patients and children.[1][2]