Just completed both the hoenn and national pokedex in omega ruby

Pokémon Adventures: Omega Ruby and Alpha Sapphire, Vol. 1

Hoenn Pokedex 3D, Omega Ruby and Alpha Sapphire by robbienordgren

POKEMON Omega Ruby & Alpha Sapphire Pokedex &Hoenn Regional

Pokemon Omega Ruby and Alpha Sapphire, PkmnORAS

Hoenn - Bulbapedia, the community-driven Pokémon encyclopedia

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Pokemon Omega Ruby & Alpha Sapphire Official National Pokedex

Pokemon Omega Ruby & Pokemon Alpha Sapphire - The Official National Pokedex

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Here's a map showing locations of all catchable Pokémon in Omega Ruby & Alpha Sapphire