post-grafitti
n.— «The term “Street Art” usually refers to more visual art than more traditionally text-based graffiti, though the two often overlap. This is sometimes called post-graffiti. In an effort to divorce it from its more illicit counterpart it has begun to appear legitimately in large exhibitions and public spaces worldwide.» —“Street Art and Society” Trinity News (Dubling, Ireland) Oct. 8, 2008. (source: Double-Tongued Dictionary)
includes “urban calligraphy”