If we want to talk about artwork plagiarism, Genesis related.....one of the drawings that Paul Whitehead did for Trrespass is a blatant copy of an existing work. I'll try to find the link.
Nothing new about this, either, The Moody Blues cover artist Phil Travers based the cover of "Every Good Boy Deserves Favour" on "Der Kristall" by Sulamith Wulfing, adding the back cover section to reflect the subject matter of the title. Another band has copied their cover, in a cartoonesque style. Can't remember who now. In an "about turn" manner, their "The Present" cover was based on a Maxfield Parrish artwork, later used in it's original form by a band called Dali's Car. No one was sued!