WTF is all of them is lowest at tier3 with some top tier is tier2 !!
Basically,
Gallantmo/Dukemon commands the Digi-Hazard. This substance can destroy entire universes as seen in
Digimon Tamers. He's also been consistently depicted as being comparable to, if not superior than
ChaosGallantmo and
Megidramo. The former of which is completely made of DigiHazard and the ladder nearly destroyed two Universes just by his presence in
Digimon Tamers and is a member of the Great Dragons. Other members of the Great Dragons include
Goddramo,
Holydramo and
Azulongmo. Gallantmon isn't even considered to be "high tier", thus should logically scale to everyone in the group.
They have a couple of other Universal feats too, like being more or less comparable to the Seven Great Demon Lords, a few members of which have Tier 3/2 feats (
Lucemo can destroy entire universes with ease,
Barbamo commands and warps a parallel universe,
Leviamo can eat the entire Digital World etc).
The list of Universe feats goes on. In
Digimon World DS, Alphamon was depicted as being more or less comparable to the Holy Beast and was on par with
ClavisAngemon, whose bio states has the power to collapse the Digital World (granted, only under special conditions).
Argomon's bio states he can warp entire Dimensions, and he's weaker than
ShineGreymon BM, who is somewhat comparable to the Royal Knights. One of the Manga also has a Digimon who can completely destroy the Universe, who is stopped by I believe Alphamon or Gallantmon.
The Tier 2-A feats are much more straight forward. At the end of
Digimon Story: Cyber Sleuth, Alphamon, Omegamon, Diaboromo,
Gaioumo,
Rosemo,
MegaGargomo and
HiAndromo all defeat an entity called the "
Mother Eater", who was going to reset the entire Material World Multiverse [which was stated to be infinite] and was ludicrously above Yggdrasil who had "Higher Dimensional capabilities". Before they fight the
Mother Eater, they fight Crusadermon, Dynasmon, Examon and Leopardmon, the last of which is considered the weakest of the Royal Knights in most sources (though he said he was the strongest in the game). I can post scans or sources on most of the feats if you need.
I wonder how Royal knights can deal with her 100% possiblity control Hax and mid-high tier reality warping
Magnamo has a similar ability. He passively manipulates the Universe to his whim.
Jesmo also has very beefy reality warping. All Royal Knights have some extreme Reality Warping resistance, as they weren't completely "deleted" when Zeed attacked them. For reference, Zeed destroyed countless, if not infinite worlds just by
existing. Heck, his weakest form completely wrecked the timeline of the Digital Wold just by
being. Alphamon and Jesmon also apparently tanked the Digital World being reset without any noticeable issues in
Digimon Adventure Tri. 3 Confessio
All that said, how fast are the Magic Gods? Because the Royal Knights have yet to display anything past MFTL+. Well, Alphamon has an Immeasurable feat in the TCG but I'm not sure if we can use that.