Aladdin's WoM is pretty damn good which is a lot more than what other studios can say about their films right now so I'm not sure what you are getting it. Being a Best Picture contender is irrelevant to whether the audience loves a movie or not
The Lion King is much much more iconic than Dumbo, Mary Poppins was a sequel to the original and didn't have Julie Andrews in it. Favreau is also directing TLK and the trailer views are way higher than Dumbo and/or Mary Poppins. Visuals in TLK look incredible too