The top results based on the latest update are Octodad: Dadliest Catch [Score: 1.2], Besiege [Score: 1.1] and World of Goo [Score: 1.2].
The top rated games you can find here are Garry's Mod [SteamPeek Rating: 12.8] ranked #67, Portal 2 [SteamPeek Rating: 12.0] ranked #79 and Half-Life 2 [SteamPeek Rating: 11.0] ranked #224.
Also don't forget to check the newest releases Hand Simulator: Horror [Release date: 2020-12-22] ranked #153, Zup! Z [Release date: 2020-12-21] ranked #71 and Fireworks Mania [Release date: 2020-12-17] ranked #115.
While it is tempting to play with the newest and the best, there might be some other gems in the results, like A Fisherman's Tale [SteamPeek Rating: 5.9] ranked #52, Zup! 2 [SteamPeek Rating: 8.2] ranked #53 and art of rally [SteamPeek Rating: 7.1] ranked #54.