So I have a weird relationship with Disney... growing up, I saw Aladdin and Lion King in theaters, and saw maybe 2-3 others altogether, but that was it. Now, I have two daughters, and have watched Every. Single. Princess. Movie. Ever made. Repeatedly. To the point where I can do the Oaken voice from Frozen and tell by background music alone what scene they're in.
So, my spectrum for Disney movies is halfway enjoyable - KILL THE BEAST. And, if anyone is interested, I also sometimes do Disney satire.
But to the actual question...
Up, Wall-E, Tangled, and Hunchback of Notre Dame are my favorites to actually watch. Up for it's exceedingly realistic depiction of grief and mentoring, Wall-E for it's take down of modern indulgence and sheer artistic value, Tangled for its hauntingly realistic depiction of abusive relationships, especially mother-daughter ones, and brilliant dialog (deadpan, to a bunny, "Stay calm, it can probably smell fear.", "Take a deep breath through the nose. What are you getting? Cause to me, it's one part man smell, and the other part really bad man smell. Overall, it just feels like the color brown. Your thoughts?", "Is that blood in your mustache? Blondie, look at all the blood in his mustache! Good sir, that's alot of blood!), and Hunchback for being the single darkest Disney movie in the canon and having an amazing soundtrack.
For my girls to watch, I like the above (except maybe Hunchback... genocide is a little much for a 7 year old), Brave, Lion King, Moana, and to an extent Mulan. They like Frozen and its sequel, Little Mermaid, Aladdin (my nostalgia vice...), Sleeping Beauty, Cinderella, Princess and the Frog, Beauty and the Beast... we have debates about the relative artistic value of the films and how the themes are much deeper in other movies... and then we watch Frozen.