There has been several realities where the Squadron Supreme and/or related characters exists. The following is a list of similar parallel universes to Earth-616. In almost every alternate Supremeverse similar resident superheroes/villains mirror it's most renown reality of Supremeverse the Squadron Supreme. Various realities exist seeming to equate a different ending from one another yet the base concept derives from the Squadron Supreme stories.
List of Supremeverse Earths:
Earth-712, or Earth-S is the reality of the original Squadron Supreme.
Earth-31916 is the Supreme Power reality.
Earth-1121 is a reality where all life was eradicated by nuclear holocaust. Hyperion was the sole survivor.
Earth-4023 is the reality of King Hyperion.
Earth-13034 is a reality that got destroyed, and Hyperion is the only survivor.
Earth-5764 is home reality to a blind Hyperion.