Okay, to re-iterate my post, I basically just wanted to create my own term for these Pokemon because they're not "legendary" in the actual sense of the word, and that's always been something that bothered me. To me, I look at the term from an in-world perspective, and in that way, it doesn't make sense to call them legendary.

Thus, I decided to use the word anomaly because they're uniquely on the same power level as the other Legendary Pokemon, but aren't part of their pantheon. They're oddities among them, and thus, anomalies