I confess I don't post here much but this could definitely identify with this thread. I had five sisters and one brother. Oldest sister and only brother have passed on.
I was really close to my brother and have a good relationship with the sister born just after me.
None of us are alike.
I live next door to my sister that is the next older one from me. She copies everything I do and then tells people it is her idea which really aggravates me because then they think I copied her. For instance several years ago I started collecting Tea Infusers and other Tea related items, strainers, etc. Now she collects them and tries to find them before I do. Then she will bring them over in gloat about it.
She has always got to have everything I have only bigger and better. She has more money than I do so that's not hard for her to do. I look back and realize it started when we were kids. I love her but I don't like her much!