With stuff like Meowstic, Oricorio, Alolan Forms, and Rockruff's evo, we have a lot of Pokemon with radically different designs, stats, typing, and animations sharing the same Dex number. So I thought it would be fun if we looked back at old Pokemon evos/counterpart that would be forms if they were added today.

>Regional Variants
Slowking
Scizor

>Gender Differences
Nidos
Illumise/Volbeat
Possibly Gardevoir/Gallade
Possibly Glalie/Froslass
Possibly Tauros/Miltank (technically not related, but I think if a cow and bull were added in the same gen today, they would be, especially considering XY's hordes)

>Wormadam/Lugarugan-style Evos
Eeveelutions
Silcoon/Cascoon
Possibly Beautifly/Dustox

>Oricorio-style Variants
Plusle/Minun
Lunatone/Solrock

>Mega Evolutions
Most cross-gen evos