You have got this!! My dpad directions should be good (ooh and let me know if you make a faster route!). Good luck and have fun!! :)
Update 15th May 2021: A new strategy where you turn off guests found by @plnkblue means that "Squirming Evil" becomes a viable song, the route has been changed to accomodate that. Also you cannot access options to change guests until you have cleared Destiny Islands world.
Destiny Islands
- Destiny Islands (3/3Green)
- Bustin' Up on the Beach (6/6Green) ---4 Green star gate--- DPAD UP
OPTIONS, DPAD UP, SELECT, DPAD UP, DPAD UP, DPAD UP, DPAD LEFT, OPTIONS (although it maybe faster if you just look to menu this).
Melody of Fate 3. Night of Fate (9/9Green) ---7 Green star gate--- DPAD UP
Traverse Town 4. Traverse Town (12/12Green) ---10 Green star gate--- 5. Hand in Hand (15Green) DPAD UP
Melody of Beginnings 6. Shrouding Dark Cloud (18Green) ---red gate--- DPAD UP
Welcome to Wonderland 7. Welcome to Wonderland (21/3Blue/18Grn) 8. To Our Surprise (24/6B/18Grn) ---22 Gold star gate--- DPAD RIGHT
Agrabah 9. A Day in Agrabah (27/9B/18Grn) 10. Arabian Dream (30/12B/18Grn) DPAD UP
Halloween Town 11. This is Halloween (33/15B/18Grn) 12. Spooks of Halloween Town (36/18B/18Grn) DPAD LEFT
Atlantica 13. Under the Sea (39/21B/18Grn) --20 Blue star gate--- 14. An Adventure in Atlantica (42/24B/18Grn) DPAD LEFT
Never Land 15. Captain Hook's Pirate Ship (45/27B) 16. Pirate's Gigue (48/30B/18Grn) ---30 Blue star gate--- DPAD LEFT
Olympus Coliseum 17. Olympus Coliseum (51/33B/18Grn) 18. Go For It! (54/36B/18Grn) DPAD RIGHT, DPAD RIGHT
Monstro 19. A Very Small Wish (57/39B/18Grn) 20. Monstrous Monstro (60/42B/18Grn) DPAD UP, DPAD DOWN
Hollow Bastion 21. Hollow Bastion (63/45B/18Grn) 22. Scherzo Di Notte (65/47B/18Grn) DPAD LEFT
Wicked Melody 23. Squirming Evil (68/50B/18Grn) DPAD UP
Seeker of Darkness 24. Guardando nel buio (71/53B/18Grn) ---red gate--- DPAD LEFT
Castle Oblivion (first song) 25. Castle Oblivion (74/56B/18Grn) DPAD UP, DPAD RIGHT
The Other Twlight Town 26. Lazy Afternoons (77/3Gry/56B/18Grn) 27. Sinister Sundown (80/6Gry/56B/18Grn) ---4 Grey star gate--- DPAD UP
Melody of Waking 28. Tension Rising (81/7Gry/56B/18Grn) ---red gate--- ---62 Gold star gate--- DPAD UP
Twilight Town 29. The Afternoon Streets (84/10Gry/56B/18Grn) 30. Working Together (87/13Gry/56B/18Grn) DPAD RIGHT, DPAD RIGHT
Never Land (to the right, second song) 31. Crossing to Neverland (90/16Gry/56B/18Grn) DPAD UP, DPAD UP
The Land of Dragons (first song) 32. The Home of Dragons (93/19Gry/56B/18Grn) DPAD LEFT
Beast’s Castle 33. Waltz of the Damned (95/21Gry/56B/18Grn) 34. Dance of the Daring (98/24Gry/56B/18Grn) DPAD LEFT
Halloween Town 35. What a Surprise (101/27Gry/56B/18Grn) 36. Happy Holidays! (104/30Gry/56B/18Grn) DPAD UP, DPAD RIGHT
Timeless River 37. Monochrome Dreams (107/33Gry/56B/18Grn) 38. Old Friends, Old Rivals (110/36Gry/56B/18Grn) ---34 Silver star gate--- DPAD UP
Radiant Garden (second song) 39. Scherzo Di Notte (113/39Gry/56B/18Grn) DPAD RIGHT
Crushing Melody 40. Sinister Shadows (116/42Gry/56B/18Grn) DPAD UP
Space Paranoids (SECOND SONG) 41. Byte Bashing (119/45Gry/56B/18Grn) ---45 Silver star gate--- ---102 Gold star gate--- DPAD UP
The World that Never Was (FIRST SONG) 42. Sacred Moon (122/48Gry/56B/18Grn) DPAD UP, RIGHT
Superior of the In-Between 43. Darkness of the Unknown (125/51Gry/56B/18Grn) ---red gate--- DPAD UP
System Sector 44. Wonder of Electron (128/54Gry/56B/18Grn) 45. No More Bugs!! (131/57Gry/56B/18Grn) ---red gate--- DPAD UP
The Land of Departure 46. Future Masters (134/3T/57Gry/56B/18Grn) 47. Promised Beginning (136/5T/57Gry/56B/18Grn) ---4 Teal star gate--- DPAD UP
Dwarf Woodlands (FIRST SONG) 48. The Secret Whispers (139/8T/57Gry/56B/18Grn) DPAD LEFT
Castle of Dreams 49. Bibbidi-Bobbidi-Boo (142/11T/57Gry/56B/18Grn) 50. Castle Escapade (145/14T/57Gry/56B/18Grn) ---red gate--- DPAD UP
Radiant Garden 51. Radiant Garden (148/17T/57Gry/56B/18Grn) 52. Black Garden (151/20T/57Gry/56B/18Grn) ---16 Teal star gate--- DPAD LEFT
Deep Space 53. Hau Oli Hau Oli (154/23T/57Gry/56B/18Grn) 54. Makaukau (157/26T/57Gry/56B/18Grn) DPAD UP
Evil Fairy 55. The Encounter (159/28T/57Gry/56B/18Grn) ---red gate--- ---24 Teal star gate--- DPAD RIGHT, DPAD RIGHT
Melody of Will 56. Rage Awakened (162/29T/57Gry/56B/18Grn) DPAD UP
Melody of Culmination 57. Black Powder (165/32T/57Gry/56B/18Grn) DPAD UP, DPAD UP ---165 Gold star gate---
KINGDOM HEARTS 3 58. You've Got a Friend in Me (2O)
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Happy Hair Day (5O) ---4 Orange star gate---
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Monster Smash! (8O)
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Robot Overdrive (11O) ---9 Orange star gate--- ---11 Orange star gate---
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Rise of the Union ---red gate---
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Dark Domination