Analysis of information sources in references of the Wikipedia article "Endless (comics)" in English language version.
Artist Kelley Jones says, "I know Neil always said [the Sandman] was based on Robert Smith of the Cure,...
If I remember correctly Dave based the face on the cover of Sandman #1 on an image of Peter Murphy.
Mike Dringenberg: "The Sandman himself is even more of a composite. Certain well-known people influenced the design -- his mop of hair came from Robert Smith and ballet dancer Farukh Ruzimatov was always in my mind for his dramatic physique,..."
The original idea-model for Morpheus was Peter Murphy from Bauhaus.