This is a controversial pick.
But...for me it's Walt Disney Studios Paris.
I know y'all don't agree with me, but I LOVE the movie-making theming. Hollywood Studios is unfortunately getting rid of the movie-making theming to make way for Star Wars and Toy Story, which I don't care about.
My beloved Walt Disney Studios Paris though (I've only been once when I had one day to spend in France, and rightfully chose to spend it at this amazing park), doesn't get rid of the movie theming. It embraces movie making and magic, and that's what I love. The clear #1.