Looking through some of the Original Skin descriptions and I think most of them can fit Pre-Entanglement, but a couple like C&D's Growth and Decay are tougher bc it seems like but can go anywhere since they seem to be variants. I did realize that the Immortal Dragon skins don't actually seem like the same characters they're skins for funnily enough, so I don't think they're variants
It kinda got me thinking about the possibility of there being Rivals original novels or comics taking place before the Entanglement/side stories based on AU's affected by the Entanglement that kind of tie into the game's skins (Immortal Dragons characters in an Iron Fist one, Frost Giant Loki in a Thor one, etc.)
Does the game have any more lore tucked away that we haven't touched on/discussed yet