Affection: which relationship is better between brother, sister, brother and sister? What is the order of these four intimacy levels?

Brother and sister in the mood, which relationship is better? What is the order of these four intimacy levels? I think if you want to say intimacy, it is the first order. It should be a good relationship between brother and sister, because the elder sister is sincere to the younger brother, and then there is a sister relationship. The two sisters get along well and well. This is brother and sister, and the last one. I think it is between brothers and sisters. Brothers get along well, but not well. Especially after marriage, they each have their own home.