Well I seem to be in a "mutant" state of mind, so let's keep the ball rolling with our next contestant, Nate Grey, also known as X-Man.
Hailing from the alternate universe of Earth-295 (better known as the Age of Apocalypse), Nate was essentially that universe's version of Cable (minus the techno-organic virus), which enabled him full use of his immense psionic abilities. Like Legion, Nate has been classified as an Omega-Level mutant. He has demonstrated such powers as the ability to exist incorporeal as living psychic energy, precognition, telekinesis, telepathy, energy and matter manipulation, psychometry, astral projection, teleportation, cross-dimensional travel and energy projection. Dr. Moira MacTaggert had even once stated that his powers could rival even that of a Phoenix Force-imbued Jean Grey.
If this guy were to go head-to-head with Archanfel...I'd wanna be somewhere else.