1 because she looks very serious to do her business. She seems like she can have alot of self control and keep herself and the group together. 2 is definitely a hyper, emotional, sassy side character. She's very dramatic but has alot of personality. 3 is the pure but most paranoid soul, she would probably cry if she saw her friends angry or sad. 4 also could've been the leader but she helps the leader; shes the helpful and protective friend, she's the reason why everyone doesn't fight each other.
I spent half an hour trying to search for your channel, but when I tried all the results were for Agnes Crumplebottom. I had to search for the Azula video to find you 😭 love your videos 💗