Very glad Hades is in second place! Very impressive when you know certain people treat indies like they're lesser games somehow and only consider AAA games to be eligible for GOTY awards.
I can only speak for myself, and really rarely an Indie really blows me up and make me want to play. I had several good ones that were given on PS+ and some others I purchased, but well for my taste they really can't compare to AAA games and would be hard to win a GOTY (but yes they are eligible, not only for their category, which brings exposition and is good, to genre and even for overall but hardly you'll see a year that you can critic wise say an Indie was the best game above every other one in most metrics, even more because it won't generally even manage to get the top end on graphics, OST, voice acting and others that truly depend on a lot of financial investment and manpower).
Well I might be an outlier but my only criteria for how I rate a game is how much I enjoyed my time playing it. Graphics, OST, voice acting, gameplay all come into play of course but a game having low production values doesn't lose points if it's fun as hell.
Over the last few years, I think more indie games have made it my Top 50 games of all-time than AAA games. Namely, Hollow Knight, Celeste, Ori and the Will of the Wisps, Guacamelee, Risk of Rain and Hades. To me these games can stand shoulder to shoulder with bigger titles no question asked.