Pokemon League - Pokemon Omega Ruby and Alpha Sapphire Guide - IGN

Complete Hoenn Pokédex with No Cheats - Pokémon Ruby

Pokemon Adventures: Omega Ruby and Alpha Sapphire Manga Volume 1

So the pokédex in Omega Ruby and Alpha Sapphire is a gameboy

Pokémon Omega Ruby, Alpha Sapphire let you fly freely around Hoenn

Kaitlyn Molinas on X: Adding to the list of cross-generational Pokemon references, apparently completing the Hoenn-Dex in Omega Ruby/Alpha Sapphire gives you a diploma with a pretty blatant Sun/Moon hint /

Torchic - Pokemon Omega Ruby and Alpha Sapphire Guide - IGN

Ruby

Soar Over Hoenn - Pokemon Omega Ruby and Alpha Sapphire Guide - IGN

Tier List for Pokemon Omega Ruby & Alpha Sapphire : r/nuzlocke

Completed the pokedex in Drayano's Rising Ruby! : r/PokemonROMhacks