Numbering system for variants?

[NFulkerson]

I'm using these sprites in a personal project and supplementing them with artwork from Sun & Moon. I'd like to contribute back to the PokeAPI project by submitting a pull request with this content, along with whatever data I contribute to the core. However, there are many variants (Alola forms & identical Pokemon species with different appearances and typings), and I'm curious how the project tackles these.

[hugmanrique]

As there's a folder for shiny pokémons, you can create one called alola and put the sprites inside of it if they are already in the main Pokémon folder.

[craig-clayton]

I imagine that when added, Alolan forms will be recognised with different ID's (as Mega's are from their non mega versions and different forms are to the base form) due to the differences in typing and move sets etc. It seems like a significant undertaking to integrate these under a single ID.

But until this is tackled I guess we won't know, so for now it may be best to just include them in an alola folder.