Translation said:Amenotejikara
A ninjutsu using the Rinnegan received from the Sage of Six Paths. With in a certain range, the jutsu user can switch himself with the location of a target object in an instant. If the user switches himself with other objects in close-range combat, the user can evade enemy attacks in an instant, and can also attack by switching himself with a kunai or other weapon.
It's a Rinnegan ability. He could already use Ameno without his Tomoe Rinnegan which is clear when he swapped places with a Shin clone using just a regular Rinnegan.
It seems to align to what is stated in the Databook, but keep in mind that this is merely a translation I found.
It's a RinneSharingan ability, Sasuke can use it because he has Kaguya's eye but without the Juubi's power
You really should read databook 4 which is actually Kishi work not some fan made theory. Sasuke eye is Rinnegan and its KKG.Rinne Sharingan is eye placed on forehead and its KK Mora