Which Pokémon game should I dive into next?

Every time I post this to a Nintendo sub it gets removed lol

Hey guys so while I grew up around Gameboy/Nintendo era I only ever played my friends/cousins consoles, I was mainly a PS1/2 guy. I mainly played Emerald and loved it but the prices are insane and I wouldn’t pay for it.

Now my nostalgia is kicking in so I have picked up the following:

LAST YEAR

-OLED Nintendo Switch *Pokémon Sword: Completed (Thinking of buying DLC)

*Pokémon Shining Pearl & Brilliant Diamond Pack: Unopened (Thinking of playing Diamond and selling Pearl)

LAST 2 MONTHS

-DS Lite

-DSi XL

-N3DS (Mario Black Friday)

-N3DS XL x2 (Galaxy Edition)

*Pokémon HeartGold (DS) *Pokémon Black (DS) *Pokémon Black 2 (DS) *Pokémon Alpha Sapphire (3DS) *Pokémon Moon (3DS)

Which games should I dive into next and what’s the best order to play them in? Also which console is best for which?

Thanks in advance!