Pokemon Scarlet & Violet introduced some entirely new Pokemon that are based off existing Pokemon known as Paradox Pokemon, those past/ancient/prehistoric/anything related to historical times of the past themed are exclusive to Scarlet, whilst those future themed/robotic are exclusive to Violet. These should continue being a thing in Gen X as well, which includes having the same sorts of 2 worded names, only something different from Paradox Pokemon. Gen X in particular would be a good time to have such Pokemon based off those from Gens IV and VI, whilst at the same time not having any based off those from Gens III and V.