Anemo: traveler, Sucrose
Pyro: Yanfei, Amber, diluc, xiangling, thoma, Xinyan, Bennett
Geo: Noelle, Ningguang, Yun Jin, Gorou
Hydro: Barbara, Zingqiu, Ayato
Cyro: Shenhe, Kaeya, Chongyun, Diona, Ayaka, Rosaria
Electro: Fischl, Lisa, Miko, Kujou, Raiden, Razor
So then we get to 100 and no more leveling, fine...we still have to level 100 levels to get there though when making a new character and that is the painful part, not leveling 5-10 levels once every 2-3 years. Also, no matter what kind of alternative Blizz came up with instead of leveling, no matter how cool or how much better it was, you'd still have a large portion of people crying "you didn't add levels because you're lazy Blizz, less content blah blah".