Depends on if you want to include PS4 games like god of war which is easily the better game. But in terms of PS5 only games, id rank them like this:
1) Returnal
2) Demon Souls
3) ratchet
4) astrobot
5) tlou part 1
2 PS3 era 1:1 remakes, and 1 free 2 hour game. so yeah, not a lot of competition. sony really fucked up not making horizon, miles, gt7 and gow next gen. they feel too iterative, too safe, too similar. Sony had all their studios lined up to just kill it and they blew it. so yeah, returnal pretty much wins by default.