Just wanted to clarify a few things.
The pegs of all Energica motorcycles (2018+) are all the same.
The parts that the pegs attach "rear sets" are different for each of the 3 models in the lineup.
The threaded mounting positions on the frame where the rear sets attach are the same.
According to the photo, I suspect that the Ribelle is 3 cm higher and 5 cm more backward.
These numbers sound accurate, Ribelle has a more committed sport riding position, somewhere between the SS9 and the EGO.