There actually was an attempt on HN a little while back to use GenAI to convert facts, flashcards, lists, etc. into automated melodic mnemonics. The biggest issue in that particular case was that it was also generating the motif from scratch.

At least for me, part of the reason I can still sing the countries of the world is because the original Animaniacs song was set to a tune that was already familiar: “Jarabe Tapatío” (aka the Mexican Hat Dance).