Before I got into the fandom I sorted them according to the edits I’d seen:
Peter = Gryffindor
Susan = Ravenclaw
Edmund = Slytherin
Lucy = Hufflepuff
Now I sort them as:
Peter = Gryffindor or Hufflepuff
Susan = Hufflepuff (love Slytherin!Susan though. It’s one of my favourite headcanons)
Edmund = Hufflepuff or Ravenclaw
Lucy = Gryffindor
Personally I think Peter would fit in well with Gryffindor or Hufflepuff. He’s loyal and brave to a fault so I can see him doing well in either house for sure.
Susan is not a Ravenclaw in my mind for essentially the same reasons that Hermione isn’t. She’s not that open to ideas that seem far-fetched or have no proof backing it. I feel like to be a Ravenclaw you have to be willing to keep your mind open to some degree for things that still don’t have explanations (like Luna Lovegood but not to the exact same degree). So as to Susan she’s a Hufflepuff in my mind!
Edmund is either a Hufflepuff or a Ravenclaw. I can see him fitting in well with either house but I don’t see him as a Slytherin (his sorting of Slytherin before I got more involved in the fandom was probably the most debatable to me).
As for Lucy, before I’d always see her as a Puff:) Like she’s kind and loyal to a fault and it made sense to me that she could belong in that house (I even made an edit dedicated to Hufflepuff!Lucy). Now, however, I see her as a Gryffindor through and through. She’s like Ginny in my mind, small but that’s no guarantee of her power (or bravery).
Edmund has always been my favourite character but I identify myself with Peter the most. He seems so lost at the beginning of LWW but he’s doing his best to take care of his siblings anyway. He doesn’t feel strong but he always keeps faith.