Again, arguing for few "classic RPGs" is for narrow-minded idiots who only respect mega hits like Skyrim and Witcher 3.
If that's your count, then I still think you are thinking of the genre as a single monolith with a singe player base.
If you like blobbers, then Grimoire and Legend of Grimrock II are really amazing. If you like Action-RPGs, you get Nier, Nioh, Dark Souls and Dragon's Dogma. If you want Infinity Engine clones, go play Pillars or Pathfinder. Roguelike fans got ToME, Cataclysm: Dark Days Ahead, NEO Scavenger and Brogue. Diablo fans got path of Exile and Grim Dawn. If you like Fallout, you have Underrail, AoD and ATOM, and so on... a game doesn't have to be loved by everyone for it to be a new classic for a certain niche or sub-genre.
But it was
you who included "new classics" categorization in the graph.
Why do you did this conceptual jump to "sub-genres"? We were talking about your categorization of some games as "new classics" in a codex canon that obviously "exist" (it's as simple as the average of codexers personal canons, without points, competition nor academical eagerness to exhaustivity). But codex classics weren't accurately tested by GOTYs or the last TOP 101, narrow and very limited competitions.
Why we should worry about different subgenres talking about codex canon? If codex canon totally ignored rogue-likes, blobbers. real time combats or diablo-likes, that wouldn't make it less precise. If the codex average opinion about THE 50 classics or must-play ignore a game that you,I or other 50 codexers like, that would be totally ok, because that's an average, it's not about equanimity nor exhaustivity.
However I'm pretty sure that a simple codex average "50 titles" canon would be much, much more exhaustive tham top-101 list.