Alola forms are more or less a mystery in Pokemon Sun and Moon. The only thing we really know about them is that they evolved from their old forms after time adapting to the Alolan environment. It's a lot more like a natural evolution in the way Darwin is famous for exploring, rather than what we're used to with Pokemon.
For better or for worse, these Alola Forms have dramatically transformed from their original counterparts and may as well be considered new Pokemon for all intents and purposes. Their types are different, their stats are different, their moves are different, and -- most notable of all -- they straight up look different.
We went through all 18 of the new Alola Form Pokemon and ranked them from worst to best. To keep from being redundant -- and to save your time so you can get back to Sun and Moon -- we only included the 10 final evolution Alola Forms on this list. (We don't need to spend the first half of this list bashing on pre-evolutions, after all.)
If your opinion on Alola Forms differs from ours, feel free to comment. We'd love to discuss Sun and Moon's unique regional variants with you down below.