Apparently, these are the what the leaks are saying the banners are from 4.5 thru 4.8
4.5: Chiori, Kazuha, Itto, Neuvillette
4.6: Arlecchino, Furina, Lyney, Shenhe
4.7: Clorinde, Siggwinne, Wriosthley, Baizhu
4.8: Emilie, Navia, Wanderer, Kokomi
Its an absolute nightmare 😭