Only Merida and Hiccup. I usually don't ship any crossover characters but this is the only exception.

Jack Frost and Elsa: i would love to see a "cold duo" and him lovely personality with her introvert personality... i can't help it;
Aladdin and Mavis: two romantics persons, a male human and a vampire girl (i love human/vampire);
Hiccup and Merida: they have almost the same culture and would be a funny, badass couple.

there's a fanpopper here called ajotma and she totally sold me on miguel and charlotte labouff; her edits for them are fantastic, and they just seem like they'd be kindred spirits. (though i ultimately want him with tulio.)

Also love Migottie (awful ship name but whatever). It's terrible that there's no logical way for them to meet unless Mama Odie can send one of them to the others' era.

But Anna x Pitch Black is one of my OTPs.

And as a young kid my very first crossover ship was Odette x Quasi

Jasmine & Tulio (Road to El Dorado) ♥️

I honestly like it more than Jas/Aladdin lmao.

Miguel is my favorite animated male and I ship him with many heroines.

Not gonna lie I ship Jelsa a bit haha

I've never managed to get into shipping outside of canon couples. Some of the crossover pictures look fantastic though.