Notes:

Stands are named after films and television series instead of songs and bands.
The universe was reset 36 times. Kars became an immortal being in all of them, so he lived through the resets, meaning there are 36 Kars hanging out on Mars. Apparently they are the 36 souls of sinners in Dio’s plan to go to Heaven.
Part 3’s Dio Brando was a fake Dio.
Rohan survived the universal reset by being so concentrated on his manga work that he didn’t even notice Made in Heaven’s effect, somehow making him immune to it.
The area of Morioh breaks off from the mainland and sprouts legs.
Part 1 Dio becomes the ultimate lifeform. The Holy Corpse is actually his corpse, and he has a Stand that looks like Jesus called the Passion.
Jonathan comes back to life and fuses with the Holy Corpse. Gains the Stand The Passion
Killer Queen abandons Kira and joins up with Cars. Kars uses Bites the Dust to explode s--- until he’s far back enough in time that he’s at a universe where there only was one reset, the Steel Ball Run universe.
Funny Valentine has a son named Funnier Valentine, who in turn has a son called The Funniest Valentine. The Funniest Valentine's Stand is Singing On the Rain: a Rare Pepe, I mean Giant Frog that allows him to fly only when it rains á la Catch the Rainbow.