I almost always go through two biases. The first bias I like primarily because their looks caught my eye and they have a good personality, 2nd bias is the one that has a personality that's the most compatible with mine (friendship wise, although i'd very much like to marry them too). My first bias in BTS was Taehyung but even though I think he's got an incredibly charming personality, if I think about it, we could actually kinda clash, my 2nd bias and ult bias is Jungkook because I feel like we'd have no problem getting along. In Blackpink my first was Jisoo then I went to Jennie, in Girls' Generation my first was Tiffany and then went to Taeyeon. Those are the most notable ones that follow the pattern to a t.