Batman: Return of the Caped Crusaders (2016): Fun sequel to the Batman 60's series that has Adam West and Burt Ward reprising their roles.
Coco (2017): Really if I was being honest this whole list would be Pixar movies, but I didn't want to just say "This is just a brutal gut punch of a movie" four times. Seriously though, Coco is Pixar's best and one of the few movies that's gotten me to tear up.
South Park: Bigger, Longer & Uncut (1999): I'm a fan of musicals, and this is a genuinely great one. The songs all carry emotion and never waste a second of your time. I'm also a sucker for things that are lowbrow and vulgar while making an intelligent point. The anti-censorship message here isn't super original or interesting, and it isn't married to the vulgarity as well as I'd like, but it gives the movie enough of a thematic drive to carry it forward.
Zootopia (2016): The most impressive thing to me about this movie is how lived-in the world feels, and how much that helps the message resonate. It's got a strong anti-discrimination message, which should feel trite and played out (especially in kid's movies), but the world is portrayed realistically enough that the prejudices aren't arbitrary and making them specific to this world means that the underprivileged classes of animal aren't just representations of real-world social classes, which helps the message feel fresher and less preachy. It's also just super funny and well-acted.
@Stealphie What didn't you like about Ralph Breaks the Internet? I remember it not being as funny or clever as the original, but I dug the story about Ralph becoming unhealthily attached to his friend and how it tackled his low self-esteem and lack of real identity outside of her. It was a nice antidote to the stories about friendship you usually see in kid's movies.