Like many other large-scale fighting games, Horizon Zero has an official tier list created by the community who plays the game. The tier list ranks the characters from greatest to worst in gameplay style. Please note that the tier list does not include the character Sheddane, who is extremely flexible for a character and can be customized in so many ways that it is impossible to rank her, especially considering she has no default set.
Additionally, remember that every character in this game is actually great, just some characters are better than others. Satan, Lip, Eustace, Amethyst, and Bart, who sit on the bottom of the roster, are actually still really good characters. Further more, one can upgrade their characters to make them better.