I am realistic about who and what they are. I think my siblings might be narcs as well, where I'm the scapegoat. I've found something helpful on Quora which I've pasted below in case it helps anyone else.
www.quora.com/How-do-narcissists-treat-their-siblings
Elizabeth Conolly, studied Psychology
Answered Dec 1, 2018
If they are both narcs, they tend to be very competitive with each other, even if different ages, genders, and even if they have very different goals in life. The Golden Child will continue to torment a Scapegoat, usually the roles continue. I’ve also found that the roles can reverse, as the scapegoat can find their way in the world, and their talents, or learn that they weren’t the awful person they were led to believe, so then they tend to become very successful, and become excellent narcissistic supply, whereas the Golden Child may find the real world a harsh reality check, where they find they’re not as special and Golden as they were led to believe. For example, maybe grades were everything growing up, and in adulthood, they realize some of the things that were so important in the family, don’t really matter, and you can’t rely on grades, looks, weight, sport talent, or whatever was valued by the narc parent/ parents. It’s a bit of karma I’ve found.
Good huh? I mean, not good that we lived it, but scapegoats are the most high functioning.