Hello, I'm going to have to ask you to stop changing the terms of "secondary antagonist" or adding "tritagonist" etc. We've had a problem with users doing so in the past and all edits regarding this will be reversed.
1) It’s subjective. Who is the quinary protagonist of Redemption 2? I don’t know, and everyone would give different answers. Reason? No such role exists, so it’s purely speculation to say, for example, that Javier has the role in question. This is just an example, but it showcases how these supposed roles are not clear-cut, and therefore not worthy of mention.
2) The roles are fairly grouped. For example, Dutch and Bill are both considered "one of the primary antagonists [of Red Dead Redemption]", but it doesn’t mean that their roles are equal. Instead, it both means that they have a significant role as antagonists, which is all that needs mentioning. Delving any further is unnecessary and, as the first point mentioned, subjective. It makes it very convoluted, when the only purpose of the article's introduction is a brief outline of their role. Any more information on it is irrelevant.