I am careful to limit the amount of things I add t keep the cakes mostly crab.
I make the mix first, so I dont smash up the crab lumps.
Naturally some bread crumbs, some raw egg, ( I usually give 1/2 the egg to the digs)), dab of mayonnaise, pinch of mustard powder, pinch of old bay seasoning, fine chopped onion, Cheese like mozzarella, sweet red pepper, celery and dill. Cheese helps to bind along with the egg.
I bake them or fry in a bit of bacon grease.