Pokemon Trading Has Been Tested On Nintendo Switch Online's Game Boy Emulator

Pokemon Gen 1 to 3 games haven
Pokemon Gen 1 to 3 games haven't officially made it onto NSO yet, but a programmer demonstrated that trading should work flawlessly.

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Pokemon Trading Has Been Tested On Nintendo Switch Online's Game Boy Emulator

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Successful link cable Pokémon trade from openFPGA Game Boy Core (using Memories) to Game Boy Color (using Everdrive X7) : r/AnaloguePocket

Pokémon Blue Cheats & Cheat Codes for Game Boy - Cheat Code Central