Here, are the list of best alternate timeline shows as below: What If...?, Loki, Quantum Leap, .
Taking inspiration from the comic books of the same name, each episode explores a pivotal moment from the Marvel Cinematic Universe and turns it on its head, leading the audience into uncharted territory.
OTT Platforms for What If...? are Disney Plus
After stealing the Tesseract during the events of “Avengers: Endgame,” an alternate version of Loki is brought to the mysterious Time Variance Authority, a bureaucratic organization that exists outside of time and space and monitors the timeline. They give Loki a choice: face being erased from existence due to being a “time variant” or help fix the timeline and stop a greater threat.
OTT Platforms for Loki are Disney Plus
Theorizing that one could time travel within his own lifetime, Dr. Sam Beckett stepped into the Quantum Leap accelerator and vanished... He woke to find himself trapped in the past, facing mirror images that were not his own and driven by an unknown force to change history for the better. His only guide on this journey is Al, an observer from his own time, who appears in the form of a hologram that only Sam can see and hear. And so Dr. Beckett finds himself leaping from life to life, striving to put right what once went wrong and hoping each time that his next leap will be the leap home.
OTT Platforms for Quantum Leap are NBC Apple iTunes, Google Play Movies, Amazon Video, Vudu, and Microsoft Store.