I'm a realist. When somebody does a cover of a song they frequently change the key, it's one of the things you do to make a song "your own", doesn't mean it's a different song just a different rendition of the same song. Functionally those songs are all covers of each other, yeah the re-arranged the lyrics a little, yeah they changed the key, but the points of similarity are much higher than the points of disimilarity. They're generic cheesy sweet innocent love songs, the keystone to everything that is sick and wrong in modern pop.
It is not about the exact notes or lyrics, it is about the formula.
The Beatles certainly perfected a love song/pop formula.
One that some of us resent.
My point was all those songs aren't the same chord progressions and constructions: they're all very different from each other. What you're suggesting is that they're all "Knockin' on Heaven's Door," but since Axyl Rose's voice is different than Dylan's, he sings it in A instead of E, or whatever. Such is very much not the case with the songs you suggested.