I think it's unneeded. Why make a whole new level just to say something is really strong? Heck, even the name feels weak. You just slapped "super" onto an already-existing term.
I guess the idea behind the rather simple naming is that "Super Ultimates" are still a kind of "Ultimate", they've just apparently reached a new apex that may or may not be considered a whole different league from average Ultimates (depending on the media)...... a sort of Schroedinger's level, if you will.
To begin with, the Super Ultimate stage was almost exclusive to V-Tamers. It'd get a passing reference here and there (ex. Chronomon in the first Digimon Story), but it seems like a Level 7 has only truly come into prominence within the past decade.
Huanglongmon was at one point the God of the Digital World, so if we’re awarding honorary Super Ultimate status, it would be a good candidate.
Huanglongmon IS confirmed to be a Super Ultimate. This is apparently the case in ReArise. Not that I've played it, but Wikimon features a listing of Digimon who have been officially considered a Super Ultimate within at least one piece of media.
wikimon.net
Granted, this listing is subject to change (I remember at one point, it included things like the X-Antibody versions of Minervamon or LordKnightmon due to the V-pet supposedly treating them as higher-grade Ultimates).
Originally I would've said things like the Burst Modes but I've since levelled out on those after seeing them as Megas in all recent media. So now it's more like there's Mega, Mega+, and Ultra with Burst being on Mega+.
Yeah, this sounds about right. Ultimate+ would make for a good in-between. Incidentally, I thought Cyber Sleuth had a really good system going with its incremental memory requirements (which also tended to be directly tied to a Digimon's stat totals). A lot average Ultimates would have a memory requirement of 18, while something like a Royal Knight or Demon Lord would have a memory requirement of 22 (and ALL Super Ultimates were equally at the highest requirement of 25, which makes for a nice way of simplifying it to "Super Ultimates are the best of the best"). My only problem with it is that Cyber Sleuth showed a LOT of bias towards things like anime protagonist Digimon, though especially the goggle boy mains (ex. WarGreymon needs 20 memory, MetalGarurumon needs 18), and for whatever bizarre reason, neither Beelzebumon Blast Mode nor Duftmon Leopard Mode (both 25 memory) qualified for that coveted Super title (they also kinda shat on the Mamemon family completely, putting all of them in the same league as the higher Numemon stages). For the most part, though, I thought it made for a nice way of indicating varying levels of strength within the same evolutionary stages.
The only one of the currently existing list (as in the current Digimon that have been given the level) I disagree with is Milleniummon I would only put Zeed as the Ultra there with Milli as a Mega who can mode change to Moon and then Zeed is their Ultra evovled form. I know he's an evolution of Machinedramon, but so is ChaosDramon and he's just a regular Mega.
I agree with this. I honestly wonder if ReArise even considered the fact that Millenniumon has two other forms when they slapped the Super Ultimate label on it. And yes, Chaosdramon already showed us that Mugendramon can evolve without explicitly being a Super Ultimate (and considering it fuses with a Perfect rather than another Ultimate, that seems like all the more justification for a lowkey power-boost). I'm also tempted to point out that vanilla Millenniumon was introduced in an era full of Ultimates who fell horribly to power-creep, but to be fair, one could probably say the same thing about Apocalymon (and I have no problem viewing that as a Super Ultimate). Though I'm kinda torn between whether MoonMillenniumon should count as Millenniumon's "Mode Change", or ZeedMillenniumon's (making Moon also a Super Ultimate). I guess in some respects, MoonMillenniumon isn't explicitly a strength increase so much as it's just "dead Millenniumon", so maybe it would've made the most sense for Zeed to be the only Super Ultimate of the bunch.
And speaking of Digimon that I think
shouldn't be considered Super Ultimates, I think they gave Omegamon way too much credit. I mean, nobody made a peep about its supposed level in V-Tamer, the media that actually introduced Super Ultimate as a concept (and which also featured Omegamon constantly getting upstaged by the Digimon that would receive an irrefutable Super Ultimate form), plus it got utterly curbstomped by Armaggemon so that Imperialdramon Paladin Mode could make its debut. Though I think this bizarre shift from being a jobber, to a "top tier", was partly the result of a renewed emphasis on Omegamon ever since the Royal Knights became a thing (with Omegamon specifically acting as their leader, or at least when Alphamon isn't around). But going back on what I was saying about memory requirements (with Cyber Sleuth being, I think, the first piece of media to officially recognize Omegamon as a Super Ultimate), they really should've just made Omegamon a higher-grade Ultimate (or Ultimate+). If it required 22 memory, it'd put it on par with all the other Royal Knights (including Examon prior to its retcon), but still put it above WarGreymon and MetalGarurumon, and still comfortably allow room for its own evolutions (Imperialdramon Paladin Mode and Omegamon Merciful Mode, and maybe Omegamon X-Antibody) to count as Super Ultimates. Likewise, Omegamon Zwart, as its counterpart, would also just be an Ultimate+, but Omegamon Zwart-D and Omegamon Alter-B would be Supers.
But then again, I can only say this in hindsight because Merciful Mode and Zwart-D didn't exist at the time (plus, it would screw with the hierarchy of the Royal Knights if Examon, short of having Alphamon around in its Ouryuken form, were the only Super Ultimate among them..... and I fully welcomed Examon's retcon since Data-types really, REALLY needed a win there). The only Digimon that looked awkward being on par with Omegamon at the time was Imperialdramon Paladin Mode, and even then, I guess you could stretch it as Imperialdramon simply receiving a power boost courtesy of Omegamon rather than an explicit evolution (which is probably why that game had Paladin Mode evolve with the Omega Blade as a special item, as opposed to a Jogress).
As for others, mostly Jogresses of Digimon like Rafflesimon, RagnaLordmon, and GraceNovamon who will most likely be Ultra should they get used in future games (although Raff has been used as a regualr Digimon more often than not annoyingly enough...).
Considering RagnaLordmon is in the card game as a Level 7, I think it's a safe bet to already consider it a Super Ultimate. Real shame that Rafflesimon seems to be getting treated as just a regular Ultimate, though. As I said before with Examon, Data Digimon are sorely in need of having more officially-recognized Ultimates (and given that Rafflesimon debuted as a fusion of Rosemon and Lotusmon, it would've made sense). Though, I'm sure the existence of JesmonGX is making it up a bit for Data-types.
As for Digimon I'd consider Super Ultimates, I like to think that ALL the Demon Lords' X-Antibody forms qualify. It'd put them all on equal footing, with some of them already seeming to be Supers (Belphemon X is modeled after its Rage Mode, which is already a Super Ultimate, while Demon X's profile states that it "surpasses" Super Ultimates..... of course, power-scaling is friggin' ridiculous as is, so let's just say it achieved its desired Super Ultimate stage). Plus, it'd make X-Antibody forms act as viable alternatives for the Super Ultimate forms that Lucemon, Demon, and Belphemon (and Beelzebumon) already have. The one wrench in this is that Beelzebumon X already appeared in ReArise, where it's apparently considered a plain Ultimate. But as Examon proved, there's always rooms for retconning, and it would be nice if they made it up for Beelzebumon after, as I mentioned before, they already they screwed its other alternate form, Blast Mode, out of having the Super Ultimate level despite having the in-game qualification.
Meanwhile, Ogudomon is an obvious contender for Super Ultimate, being the fusion of all 7 Demon Lords. However, Ogudomon X shouldn't be the fusion of all 7 Demon Lords' X-Antibody forms, as I think they should already be Super Ultimates. Instead, Ogudomon X can be either a simple X-Antibody conversion of Ogudomon (one that doesn't explicitly change levels, like DarkKnightmon or my suggestion of the Demon Lords, but only rearranges parameters in a roughly equal manner), or an evolution of Diablomon X (whom, using Paladin Mode logic, borrows energy from the X-Antibody Demon Lords).