1st place : 2017 - BOTW, Persona 5, DOS2, Mario Odyssey, Cuphead, Automata, Nioh, Horizon, Resi 7, Sonic Mania, Prey, Hollow Knight, XC2, Hellblade, Yakuza 0 Western release.
2nd place: 2020 - GoT, TLOU2, THPS 1+2, Hades, SoR4, Crash 4, Animal Crossing, FF7 Remake, Yakuza Like a Dragon, Nioh 2, Doom Eternal, Wasteland 3, 2077, Mortal Shell, Alyx, Carrion, RE3Make, Dreams
Those two easily stand out as the deepest years of the generation imo.