Maximum Matt

https://doomwiki.org/wiki/The_Lost_Episodes_of_Doom

Yes, most of them actually.  Created by Christen Klie (who also did six of the Master Levels), there are various incarnations of maps in the lost levels (and don't ask me which ones, I couldn't be bothered checking every one out!!) that also appear in the various "chris" wads in the Doom 2 folder (CHRIS2, CHRIS2A, CHRISK12, CHRISK2, CHRISK22, CHRISPA2, CHRIS_E2) as well as possibly some more in the THUD! series, and of course more scattered randomly through various wadpacks and single-level wads.  I believe only Episode 3 of the Lost Episodes was created after Max Doom came out.  But don't quote me on that.  Actually, quote me on that, I don't care