You certainly can count them. Whether you should count them, though...
WELL THEN
I honestly can only think of one pure Disney soundtrack I’d put on the list: The Lion King. Pressed for more, I might add The Little Mermaid and Aladdin. Of recent movies, I would say Moana and Frozen.
BUT, since I can use Marvel and Star Wars…
1. The Empire Strikes Back. I’ll limit myself to one Star Wars movie, and while Empire isn’t my favorite, it’s by far my favorite total soundtrack.
2. Thor Ragnarok. I’ll also limit myself to one MCU movie. Ragnarok my favorite Marvel movie and I love the score by Mark Mothersbaugh. Although the new Fantastic Four score by Michael Giacchino is, well, fantastic!
3. The Lion King. It’s my favorite Disney movie and I adore the music, especially from the stage musical.
I’ll add an honorable mention for Giacchino in general - his Pixar scores are all so good and have such memorable themes, even Cars 2, which I despise. Lightyear also has a great score, and the themes for Ratatouille, Incredibles, and Up are iconic.