These are the rules:
Starting with normal types then fighting.
The first person posts the first normal type Pokémon in the Pokédex than the next posts the next. If there is a shiny variant post the normal then the shiny variant. It is from the Pokédex not from the Pokémon box. When all normal types have been posted move to fighting and then something else will specify later. First post pidgey then pidgeotto then pigeot then ratatta and so on. Only repeat after 6 hours if it is a regional Pokémon and it’s not been posted then can do two posts ina row