Theme is established at the land level, not the attraction level. Discrete attractions is an amusement park.
That was the one true hit included. For a park opened in 1955, it's one big IP dated to 1937.
Alice in Wonderland was a dud, just like much of Disney's film work in the decade and a half leading up to Disneyland. Oswald was lost after less than a year, back in 1928, so he is completely irrelevant. Disney's reputation was solidified in the 1930s but that is not the dominate source of Disneyland content.
This is in no way relevant.
It is not pointless because if IP was so important than Islands of Adventure would be doing much better while still very much IP-free wow would be doing worse.
The analogy isn't working for you because you do not equate themed entertainment to its own storytelling medium. You keep reducing it to mere images, a decoration. In the case of Disney's Animal Kingdom it is not just a hodgepodge of animals, so something including an animal does not automatically make it relevant.