Well, the only similarity that I can think of is the prominent bergamot and pink pepper. Also, Aventus has the birch tar / pineapple combo that you won’t find in Elysium or Sauvage, so that already makes them very very different from one another.
I guess there are similarities, such as the fact that they all contain a good amount of Iso E Super, musks and Ambroxan but that’s pretty much it.