I've gone through the list and there are 6 persons with no keys as their list of games was so restrictive that I could not make it fit.
77 individuals have one one or two keys.
Alrik Fassbauer|Hero-U Rogue to redemption, Sam & Max: Season 2
Arkadia7|Hard Reset Redux
Augie Wolfe|The Sexy Brutale
axellslade|Any Soldak Game, Cally’s Trials
azarhal|Braveland, Tempest: Pirate Action RPG
azsinistar|Space Run Galaxy
Brood_Star|Warhammer: End Times - Vermintide, Spintires
Capt. Huggy Face|Kenshi
Carnifex|Stellar tactics, Stellar tactics
Couchpotato|Front Mission Evolved, Styx: Shards of Darkness
Dark Savant|Any Soldak Game, STAR WARS Jedi Knight Jedi Academy
Darkant|Radiant One , GALAK-Z
Darkheart|Pillars of Eternity: Deadfire + DLC pass, Robothorium
darklord|Darksiders II: Deathinitive Edition, Kingdom: New Lands + Kingdom Classic
Dave Allen|Kathy Rain, Sam & Max: Season 1
deiland|Deponia Doomsday, Shiness: The Lightning Kingdom
Dez|Life is Strange Complete Season
DR490N|Age of Wonders III
Eye|Undertale, The Guild 2: Renaissance
Farflame|Shadowrun: Dragonfall - Director's Cut, Stellar tactics
fatknacker50|Dead Island: Game of the Year Edition
Feist|Lara Croft & the Temple of Osiris, King of Dragon Pass
Ferris_bg|Psychonauts, Shadowrun: Dragonfall - Director's Cut (GOG)
flabbyjack|Tempest: Pirate Action RPG , X-COM: UFO Defense
GabrielMP_19|King of Dragon Pass, The Norwood Suite
Giovanni1983|Seven: The Days Long Gone
goblin|Stellar tactics, Freedom Force Pack (inc. Freedom Force and Freedom Force vs. the Third Reich)
gulla|Bionic Commando, Tesla Effect: A Tex Murphy Adventure
Gunderson105|The Way, Hitman: Absolution - Elite Edition
Heckle|Panzer Corps + Allied Corps DLC , Downfall
henriquejr|Demon‘s Rise - Lords of Chaos, The Last Remnant
Hindukonig|King of Dragon Pass , Gyromancer
hollywood_vamp|Murdered: Soul Suspect
Hurls|Dead Island Definitive Edition, FTL: Advanced Edition
ikbenrichard|Fantasy General
ilm|Risen, Dex: Enhanced Edition
JaakkoPeltonen|Battle Chef Brigade, Tiny Echo
Jaguar|The 7th Circle
JDR13|Just Cause Collection, Stellar tactics
KaosWarMonk|Stellar tactics
kazga|Icewind Dale 2 Complete
KeepitClean|Vagrus: The Riven Realms, Fantasy General
Kordanor|Oxenfree, Immortal Redneck
lackblogger|The Warlock of Firetop Mountain
Luethar|Deponia: The Complete Journey, Legend of Grimrock 2
Lynchden|Icewind Dale : Enhanced Edition
Majnun|Silence
mesmeris|Abyss Odyssey, Tempest: Pirate Action RPG
Mosaic|Overlord + Raising Hell DLC, Anna's Quest
Mrozie|Vagrus: The Riven Realms, Memoria
muhabor|Halcyon 6: Lightspeed Edition
NFLed|The Bard's Tale IV: Barrows Deep
Odrid|Titan Quest: Anniversary Edition + Titan Quest: Ragnarok DLC
Pappy|Tesla Effect: A Tex Murphy Adventure , Operation Flashpoint Red River
Philistine|Human Fall Flat
Pladio|Stellaris
porcozaur|Guild Wars 2 Heroic Edition, Any Soldak Game
Ragnaris|Mega Man Legacy Collection
redman5427|Everspace, Outpost Zero
Reiga|Any Soldak Game, Syberia I + II
RikusTyr|Demon's Rise - War for the Deep, Talisman: Digital Edition
rune_74|Stellar tactics
shaf|Any Soldak Game, SpaceForce Rogue Universe
Shagnak|Holy Potatoes! A Weapon Shop?!, Deponia Doomsday
Sir_Brennus|Ember
SirJames|Space Hulk: Ascension, Resident Evil 4
skally_wag|Final Fantasy XIV: A Realm Reborn, Pride of Nations
Stingray|Expeditions : Viking
Strafe|Stellar tactics, Next Up Hero
Terry|Stellar tactics
TomRon|Stellar tactics
turian|TransOcean: The Shipping Compa
vidder|Vagrus: The Riven Realms, Space Hulk Ascension
Vitirr|Crowntakers
wiretripped|ICY: Frostbite Edition
zahratustra|Deponia: The Complete Journey, Broken Sword 5: The Serpents Curse
zypek|Stellar tactics
I still have some keys. I'll see what I will do with those.