Take a look at Haunted PS1, the games they published or that are in their compilations are usually close to that era of visuals.

For individual games you have stuff like, Anodyne 2, Cavern of Dreams, Zortch, Worlds, Lunistice, Hypnagogia, and many more. Like someone else said, there are plenty of indie games imitating or taking inspiration from the graphics of the late 90s and early 2000s.