The Steam Awards kick off the Steam Winter Sale on Dec. 20
https://www.cnet.com/news/the-steam-awards-kick-off-the-steam-winter-sale-on-dec-20/
Either way, here's the full list of contenders and categories:
Playerunknown's Battlegrounds Monster Hunter: World Kingdom Come: Deliverance Hitman 2 Assassin's Creed Odyssey