Parsec is probably what you need. Me and my brother played through BG1 (for ps2 I believe) with an emulator and parsec. For the most part there was no lag. We simulated us both playing on his computer the same way you would play couch co-op, just in different areas.

RIP in peace.

Outer wilds. Dark souls. Remnant? Those are my top 3 (if you can count the dark soul series as one).

Diddy Kong racing! Maybe even a Diddy Kong racing 2?!

Sounds like you’re engaging in money laundering

Shadow of the tomb raider sounds cool. Haven’t played tomb raider since the pixelated block figures. Not sure which one it was.

Power to turn things into gold by touch.