First off, things to take off the wishlist because I already got them through Steam or Epic:

Beholder
Coffee Talk
Crying Suns
Realpolitiks
Sunless Skies: Sovereign Edition
Superhot One of Us Bundle (have base game)

Second, looking at GOG Preservation Program tagged games (ones they pledge to keep compatible forever with current OSes) that have macOS versions:

The Witcher 2: Assassins of Kings Enhanced Edition ($3, 85% off) - third person view fantasy RPG

GOG Preservation Program for Windows:

Vampire: The Masquerade - Bloodlines ($10, 50% off)

Other discounted macOS games:

Scarlet Hood and the Wicked Wood - Deluxe Edition ($2, 90% off) - looks like a cute point-and-click adventure game

Deep Sky Derelicts: Definitive Edition ($3.75, 85% off) - science fiction card-based rogue-like

Warhammer Quest Deluxe ($2.75, 85% off) - Turn-based Fantasy tactical combat game. I have this on Steam but there is no 32-bit Steam client so can't install on older macOS that supports the game