I don't know, the dude you fight at the end looked really Ganondorf-ish to me.
Otherwise Breath of the Wild should probably also excluded.
You have it backward. Ganondorf resembles Demise, and there's good reason for that. I'll get into that, eventually.
Doesn't change the fact that Demise and Ganondorf are two extremely separate entities; both as characters and in sheer power.
I'm writing all this not to be condescending, but because I'm not sure if you've actually played the game.
Lots of folks slept on SS because it hit kind of late in the Wii's life, it required a Wii Motion Plus remote, or due to their dislike of the Wii's motion controls in general.
Skyward Sword is essentially the first game in the series. It predates the birth of the first Ganondorf by at least centuries (I'm a little murky on exactly how much time), the establishment of the kingdom of Hyrule and it's royal family, and for much of the game, the creation of the Master Sword.
Demise is basically an ancient god of pure hatred, one that hails from an underworld realm spills out of fissures on the surface with armies of monstrous minions and battles the surface-dwellers and the Goddess Hylia to something of a stalemate. Technically, Hylia wins and seals away Demise, but she fails to kill him, and in turn loses her own divinity in the process. IIRC, when the three Golden Goddesses of Creation (Din, Nayru, Farore) left the world after its creation, leaving behind the three Triforce pieces, the goddess Hylia was tasked with being their steward. Demise wanted that power, and the ensuing battle left the surface world ruined, Demise imprisoned, and Hylia with limited time to take steps to ensure the future of the world and her subjects.
She took the last survivors off the surface by ripping chunks of what remained of the world, creating Skyloft. She also created the Goddess Sword and Fi to lead the hero prophesied to end Demise for good, then effectively died as a goddess and chose to be reincarnated as a mortal, the priestess Zelda. The residents of Skyloft still worshipped Hylia, and came to be known as the Hylians whose descendants make up the residents of later games' Hyrule, taking their name from hers.
Link and Zelda each have their own separate but parallel journeys in SS, Link bonding with Fi and the Goddess Sword on quest to reforge it into the Master Sword, and Zelda traveling with Impa (one of the Sheikah, ancient servants of the Goddess Hylia) to various purifying springs/shrines to awaken her latent abilities granted by the Goddess Hylia. Their paths occasionally intersect, and in a neat twist, you actually get to see snippets of Zelda's and Impa's journey as the credits roll.
By the end, you have Link, the hero of prophecy, wielding the first form of the Master Sword, and the first Zelda to ever wield Hylia's ability to seal away evil. Demise and Link have an ultimate showdown (a pretty epic one, at that). Demise dies, his darkness gets absorbed into and sealed by the Master Sword, the blade itself locked away to let Demise's essence decay away over time (establishing its legacy as the Sword of Evil's Bane and the Sword that Seals the Darkness), and Link and Zelda ultimately remain behind on the surface to establish the kingdom of Hyrule. Demise leaves behind a curse, however, one that establishes the cycle of rebirth we see in most of the future mainline Zelda games. A cycle that sees an incarnation of his hatred return again and again to plague Link's and Zelda's descendants. This incarnation is, of course, Ganondorf (and Ganondorf's red hair is clearly meant to evoke Demise's flaming hair). But Demise himself is done, and he was powerful enough to practically extinguish the surface-dwellers and essentially take out a primary Goddess of Hyrule in the process, WITHOUT the Triforce (he never attained it during, before, or after SS, IIRC).
As we know, Ganondorf WAS ultimately able to attain the Triforce, or at least a third of it, but even with it, he was never able to come close to achieving what Demise did without the Triforce. He's a significantly weaker incarnation of Demise. Yes, he's occasionally managed to usurp Hyrule's rulers and take the country over for a time, or even bring the civilization to the brink (100 years prior to BotW, as an example), but he's never taken out a deity, directly or indirectly.
Calamity Ganon is an interesting twist when taking all this context into account. He's obviously not a character in the sense that Ganondorf is in the older games. BotW takes place in a far-future Hyrule, especially relative to Skyward Sword's place in the timeline. Read a bit between the lines, one can infer that the person known as Ganondorf is so far gone, that pretty much nothing remains other than Demise's remnant Malice (which is essentially what fuels and perpetuates the cycle of rebirth). Ganon is no longer a character with any actual agency, but has rather devolved over the millennia (and countless defeats) into a nigh-unstoppable force of nature. Or unnature, if you will. One could argue that he's the purest distillation of Demise's remnant Malice yet, but it's taken literal ages and innumerable defeats to get to that point.
BotW2 may add to or modify this narrative. That mummy from the trailer apparently buried and seemingly suppressed (by some unknown power that may resemble Twili magic) beneath Hyrule Castle is most likely Ganondorf, and it's probably safe to assume that we'll see him resurrected or resuscitated fairly early into the game. This will also probably give us more retroactive insight into the nature of BotW1's Calamity Ganon. Perhaps it isn't that Ganondorf is so far gone as I mentioned in the paragraph above, but that he's simply displaced and divorced from the Malice that fuels Calamity Ganon. Missing in action, if you will. We won't know until the sequel hits. Certainly, BotW isn't the first Zelda game that features a Ganon without a Ganondorf. But all other instances are much, much closer to Skyward Sword's origin story than Breath of the Wild is.
It's been almost 3 years since I played BotW, and around 5 since I played SS, so I apologize if I got some details wrong. I think I nailed most of the important story beats, however. And as is the nature with the Zelda games, there's always SOME room for interpretation. This is by design. I personally don't accept an interpretation that Demise = Ganondorf, however. To me, Ganondorf is the realization of an evil god's (or demon lord's) dying curse. There's a clear and unambiguous link (if you'll pardon the word-play) between Demise and Ganondorf/Ganon, but they're not even remotely the same creature. Given what we know of the lore, it's probably safe to assume that had Demise actually secured the Triforce, or even one-third of it, he would have become truly unstoppable in a way that Ganondorf/Ganon has never managed. Similarly, the original Zelda was a mortal reincarnation of the Goddess Hylia, but wasn't Hylia herself, and could only wield, at best, a fraction of Hylia's power. Much like Ganondorf perpetuating across the ages, Zelda's power has been passed down to her descendants via her bloodline. All part of the same cycle of rebirth.
But the point of this long-winded spiel (apologies for its length), is that there's plenty of in-game lore justification for leaving Demise out of the poll while including Calamity Ganon, and it has little to do with how Skyward Sword was received by a vocal and toxic minority.
