So, the actual scaling chain would be:
Classic Era Characters would scale to 6.212682 from upscaling from the average Talpaedan, with AFS1 characters ranging around this same level.
AFS2 Era Characters would be 10x this value as Vilgax gets ten times stronger than his Classicself, as well as possible scaling to UA Era Characters, making him 62.12682 (5-C), possibly 4-B.
UA and OV Era Characters would keep their sold Tier 4 rating.
Although imo, OV Era should scale to ten times UA Era, as now they have gotten way stronger than before, being able to keep up with Anodite Form Gwen, who's superior to all Ultimate Forms, incldilg Ultimate Humungousaur's and Echo Echo