First of all, I have only added groups and idols that I'm familiar with! So please don't complain or ask me about someone who's not in my ranking.
Notice how there are some groups (Momoland and After School) were only certain few members are in, they're usually the ones who I have seen often enough to form an opinion about their visuals.
Second, I know the last two tiers might offend some people but remember, the whole ranking is based on my own standards so if I don't find your fave attractive that doesn't mean they're objectively ugly lmao.