Which of these aliases has NOT been used by electronic musician Aphex Twin?

The alias "Burial" has not been used by the electronic musician Aphex Twin. Burial is actually the moniker of another notable electronic producer, William Emmanuel Bevan, who gained considerable acclaim for his unique style of atmospheric and emotive music blending elements of garage, dubstep, and ambient. Although they both belong to the electronic music genre, Aphex Twin and Burial are distinct artists with their own individual identities and creative outputs.