Interesting timing. After my post about movies the other day, I saw this article today: The Fifty Best Catholic Movies of All Time. The "Catholic" criteria is pretty loose, which makes the selection broad, and it's not a list specifically for children, which doesn't mean that there aren't kid-friendly movies on there, it just means you'd have to check them out a bit further.
The list was compiled 10 years ago (oh, but to have an article of mine still being circulated a decade later!), and comments are encouraged for other suggestions, especially modern movies. There are a substantial number of additional movies listed. Happy viewing.