Disney World is my "home" park and I FIERCELY agree with you on
Disneyland's Fant being FAR superior to WDW's. I honestly don't get why people who still have seen both STILL like WDW's better. I'll say the one thing WDW really has over Disneyland's is the seating because the viewing area on RoA is a nightmare situation but LORD. Worth it. If WDW's Fant existed at Disneyland... it would not be nearly as popular, guaranteed.
The music they play in the pre-show to Fantasmic are all selections from the Disney Mania albums. Just listen to all of those, I guarantee you'll find every song. There was a time when they switched out that pre-show song list for another and I'm so glad it went back because it makes such great energy in the amphitheater.