SOPP777: What organ repertoire would be comparable to the Durufle Requiem?

Welcome to Secrets of Organ Playing Podcast No. 777! Today's question was set by Leo and he writes: "What organ repertoire would be comparable to the Durufle Requiem? I’ve played the Prelude and Fugue in the name of Alain years ago for my Masters organ recital. Currently preparing a recital for the Spoleto festival in May."