This is my personal list of favorite crossovers. I didn't put reasons because I was too lazy and maybe I'll edit it later but not now. And except for Ariel and Jim these aren't in any particular order. I love them all equally.
15. Jasmine/Tulio
14. Jenny/Penny
13. Jane/John Smith
12. Cinderella/Jim
11. Cinderella/Eric
10. Jasmine/Sinbad
9. Belle/Shang
8. Belle/Phoebus
7. Lottie/Eric
6. Pocahontas/Little Creek
5. Aurora/Lumiere
4. Peter Pan/Alice
3. Aladdin/Ariel
2. John Smith/Ariel
1. Jim/Ariel
<3
15. Jasmine/Tulio
14. Jenny/Penny
13. Jane/John Smith
12. Cinderella/Jim
11. Cinderella/Eric
10. Jasmine/Sinbad
9. Belle/Shang
8. Belle/Phoebus
7. Lottie/Eric
6. Pocahontas/Little Creek
5. Aurora/Lumiere
4. Peter Pan/Alice
3. Aladdin/Ariel
2. John Smith/Ariel
1. Jim/Ariel
<3