Only one of these characters has been looped through the same tortuous experiences over and over again. If you were to remove Elsie from the equation, then I’d actually place Eramis above Eris and that’s for one simple factor. While both are mortal, one has had a significantly longer lifespan. Eris was a child of the Last City before dying and becoming a Guardian while Eramis was present at the fall of Riis. People tend to forget that the Long Drift was just as bad if not worse than our Dark Age for the Eliksni and Fallen society was ruthless even after they arrived in Sol because of the piracy and tribalism that period established. Let’s not also forget Eramis had the Witness torturing her for her cooperation as well as resurrecting her fallen comrades as Scorn and converting those still loyal to her into Wrathborn. Eris at least managed to get her vengeance, there’s a reason why Eramis abandoned Sol to try and find her mate. She has nothing and no-one left so she’s abandoned everything to chase the faint chance that her family survived and are waiting for her. Your rankings for anyone besides Elsie will largely depend on how much stock you put in Eris losing her eyes and fighting to survive within the Hellmouth, because everyone else on the list has lost more loved ones than she ever will because all of them are older than her.