We found 2 Reddit comments about Max Richter Piano Works. Here are the top ones, ranked by their Reddit score.
24 Contemporary Pieces for Solo Piano
Here's the intermediate collection. For easy stuff however, check out Max Richter's Piano Works. it doesn't have the chromaticism of Dustin O'Halloran and doesn't have the trickier rhythms of Philip Glass's Etudes (which by the way I think are wildly pretentious but that's a story for another day)
Richter recently published some of his piano solo works, you might be interested in this:
It has that devastating piece from the movie, Arrival.