Honestly to me Susie seems like a knight of hope especially after chapter 4 where you can see how optimistic/hopeful (see what I did there lmao) she is that they can change the prophecy, along with keeping everybody elses hopes high, like how she managed to make lancer believe that they could defeat his dad without violence, and how she was the one to come up with the idea to defeat the titan in what seemed like a hopeless situation (admittedly with Gersons help), and far as Ralsei is concerned I feel like he would be a Prince of Void purely because he does act as an exposition dump for a lot of stuff, and in doing so he destroys the mystery/void of the dark world, like how he revealed to susie that all darkners are objects, all the other ones I agree with though, also personally I feel like spamton is an heir of doom just because he like got repeatedly fucked over lol (sorry this is so long I just really love classpecting)