There's a lot of great recs in here! A few that I don't see posted yet:

• Gone Home is a highly atmospheric exploration game where you play as Katie, a girl investigating her family's house after she arrives home and finds it empty. FYI in case you're with me in the "easily frightened" camp: this one can be just a little tense/scary in that "alone in the house at night" kind of way, but it's decidedly not a horror game.
• A Short Hike is a(n unsurprisingly) short and sweet little game where you play as Claire, a bird who goes on a little hike/adventure through, essentially, an island nature preserve. One of my go-to "relax and feel good feelings" replays.
• Bayonetta was already mentioned, but I'd specifically like to call out Bayonetta Origins: Cereza and the Lost Demon. It's a quite different game from other Bayonetta installments, with creepy-cute fairy tale vibes and somewhat unique controls.