Decided to spend the past month and a half finishing this up. Cannot stress how much time and patience it took to gather everything and combine it all together. This will be updated again once all DLC is released.
This includes most, if not all of the voice actors in the game for the announcers, characters, Pokémon and Assist Trophies. The languages are English NTSC, English PAL, Japanese, Korean, German, Dutch, French NTSC, French PAL, Spanish NTSC, Spanish PAL, Italian and Russian. The most dubs throughout the franchise. I was surprised that they decided to include a Dutch and Russian announcer.
Interesting to note is that Xander Mobus actually covers the pronunciations of the Korean characters, while doing it for English and Japanese as well. Compared to where Brawl had its own separate Korean voice actor.
Timestamps are located in the comments as the description character limit is too short. Music is also listed below.
Super Smash Bros. Brawl Language Comparison - https://youtu.be/FAl_70Oqi8o Super Smash Bros. for Wii U & 3DS Language Comparison - https://youtu.be/FeUphgYhBHs
Music - 1. Objection - by Jaws 2. Street Fighter V GENERAL STORY A Shadow Falls - The World Warriors (Attacker) 3. Mega Man ZX - Green Grass Gradation (Arrange) 4. Yu-Gi-Oh! Duel Monsters - Duel of Friendship 5. Marvel vs. Capcom: Infinite - Captain America (Classic) 6. Mega Man 11 - Fuse Man Stage 7. Dragon Ball Z Budokai 3 - Out Of Control 8. Star Fox (SNES) - Corneria - Orchestral/Electronic - Credit to Pontus Hultgren 9. Star Fox Assault ~Main Titles~ 10. Xenoblade Chronicles 2 - Mor Ardain - Roaming the Wastes 11. Street Fighter V - Ryu's Theme "The Fists That Knows No End" from Cinematic Battle 12. Street Fighter Tribute Album - KEN STAGE 13. Chaos Angel Modern - Sonic Generations Remix - Credit to Dr. Reverbnik 14. Fire Emblem 8 Remastered - 13 Truth Despair and Hope - Credit to 0rangaStang 15. Fire Emblem Warriors - Road Taken (Roar) 16. Fire Emblem 8 Remastered - 50 Comrades - Credit to 0rangaStang 17. Fire Emblem Warriors - Dusk Falls (Vallite Fire) 18. Fire Emblem: Path of Radiance - With Us 19. Fire Emblem Awakening - Destiny (Ablaze) 20. Kirby Star Allies - Fiercesome Lightning (vs. Zan Partizanne) 21. Kirby 64: The Crystal Shards - Rock Star 22. Castlevania: Rondo of Blood - Divine Bloodlines (Richter Belmont's Theme) ~ Ultimate Medley - Credit to Yaoguai Kai 23. Metal Gear Solid 4 Another Side - Calling to the Night Instrumental - Credit to Snake FoxDie 24. Bayonetta 2 - Moon River (Climax Mix) Instrumental 25. Kid Icarus Uprising - Chapter 1: That First Town 26. Kid Icarus Uprising - Chapter 2: Magnus and the Dark Lord (Part 1) 27. Kid Icarus Uprising - Boss Battle 1 28. Punch-Out!! Wii - Minor Circuit Title Defense 29. Pokémon Anime Sound Collection - Johto Victory Battle Theme 30. Pokémon Battle Revolution - Gateway Colosseum 31. Pokémon All Trainer Battle Themes Remixed GEN 1-7 (MEDLEY) - Credit to Bliitzit 32. Prince N Final Battle Remix - Credit to GlitchxCity 33. Pokémon Colosseum Music Medley - Credit to Dr. Pez 34. Learn With Pokémon: Typing Adventure - Boss Battle 35. Pokkén Tournament - Ferrum Stadium 36. Wii Fit Plus - Victory Theme A 37. Wii Fit - Hula Hoop 38. Wii Sports - Wii Fitness - Menu/Event Start 39. Wii Fit - Main Menu 40. Persona 4 Arena - Spirited Girl 41. Tales of Graces - I Want to Protect You ~white whites~ (Ending Version) 42. Final Fantasy XV - Stand Your Ground (Arrangement) 43. Kingdom Hearts 3 - Toy Box Battle 44. Marvel vs. Capcom: Infinite - Theme of Spider-Man 45. Yu-Gi-Oh! GX Tag Force - Get Your Game On 46. Star Fox Assault - VS Mode - Katina 47. Yu-Gi-Oh! Nightmare Troubadour - Fantasy Dinner (Noah and Gozaburo Duel) [2016 Remastered] - Credit to lohweo 48. Xenoblade Chronicles 2 - You Will Recall Our Names