This is a lot of good info! This is all stuff I pretty well already knew though, these are pretty standard inter-game differences. My original questions (and attached comments) were more specifically aimed at things like levelup move sets, rebalanced moves and stats, more fundamental changes to the game, like the kind you'd usually see between generations. Stuff like different graphics or mechanics, new move tutors, etc. are all pretty standard, and as your sources show, really easy to find on the game's wiki pages. I'm looking more for niche changes that the average person might miss, like what Froggyfrogsock mentioned about Hypnosis having a different accuracy in DP. Looking for the really obscure and minute changes that were made mid-generation instead of after like usual.