Oh, I like this format! Okay, favorites from each movie.
II: Peaceful Valley
III: Kids Like Us
IV: Perhaps a controversial opinion, I don't really like any of the songs in IV. Though the tune is lovely, Grandma's VA really struggles in Grandma's Lullaby. It Takes All Sorts is hamfisted and droning. Who Needs You is an abomination upon mankind. Grandma's Lullaby is probably the most forgivable to me.
V: Always There. Just rip my heart out, why don't you?
VI: On Your Own
VII: As much as I'm fond of Good Inside, it has to be Beyond the Mysterious Beyond.
VIII: Family, followed closely by The Lesson. I think The Lesson is underrated, but Family is possibly the best song in the franchise next to If We Hold on Together.
IX: No One Has to Be Alone. Not really a fan of any of these songs again, and even No One Has to Be Alone can be a bit too- adult contemporary, for lack of a better descriptor.
X: Bestest Friends, though, this is another one where I'm not too crazy about any of them.
XI: Girls and Dads. Also, I frequently forget that If Only exists as a song. Another song that's lovely in its tune, but the VAs struggle with it, unfortunately.
XII: One of a Kind
XIII: Say what you will about XIII, but Yellow Belly Bounce is a bop.
XIV: Look for the Light. Better Off Alone in second, but again, another movie where the songs are kinda meh.