I tried thinking up a few, but a) there's way more games with white covers on igdb that you may expect and b) there's also a ton of games up for debate on whether they should or shouldn't be included. Hope this helps!!

Function/Form Purist:
Umihara Kawase
Umihara Kawase Shun
Footsies: Rollback Edition
Tear Ring Saga
Gunbird
Gokinjo Bokentai
LovePlus
Azumanga Daioh! The Druglord Game
Painter Momopie
Bishoujo Janshi Suchi-Pai
Toushin Toshi Girl's Gift RPG
Drawful 2
Yami no Rumia
The Dog Island
NitorInc.: Touhou Microgames!
Fire Emblem: Gilmore Girls
Majikoi! Love Me Seriously
MegaMan Powered UP
Bomberman '94
Asuka 120% Limited Burning Fest.
Style Saavy
Pocky and Rocky with Becky
Photos with Mario
Sonic Jump
Sonic Drift
Akiba's Beat
River City: Knights of Justice


Function Purist:
Streetpass Mii Plaza
Mario and Luigi Games
NAIR
Wii Fit Plus/Wii Fit U
Pilotwings Resort
Chrome Dino
Wii Music
Epic Mickey
Epic Mickey 2: The Power of Two
Stephen's Sausage Roll
Waku Waku 7
Mischeif Makers
YoKai Watch
Samurai Western
Infinity Blade
Prototype
Prototype 2
Tap Amiibo: Nintendo's Greatest Bits
Clockwork Knight


Function or Form Debatable?:
The Great Ace Attorney Chronicles
Marco and the Galaxy Dragon
Mario Kart Wii
Muv Luv
Unbeatable: White Label
Neko Atsume
The Wii New Play Control Games?
Baldi's Basics in Education and Learning
Wolf Girl With You
Serial Experiments Lain
Mercury Meltdown Revolution
Driver: San Francisco
Rance 4.1 ~ Save the Medicine Plant ~
Rance 4.2 ~ Angel Army ~
The Basement Collection
Ginga Fukei Densetsu Sapphire
Bahumut Lagoon
Blood of Bahamut
Contact
Marvel vs. Capcom 2
Live a Live
Clannad
Fights in Tight Spaces
Harvestella
Metro-Cross
Space Invaders Extreme 2
Half Minute Hero
Burnout Paradise Remastered
Brain Age Express Math
Super Mario Bros The Lost Levels
7th Dragon 2020
Pokemon Puzzle Challenge
Hudson Selection Vol. 3: PC Denjin

White Cover w/ Logo:
True Rememberance
Tiny Islands
100 Hidden Frogs
Face Raiders
Giftpia
Tetris (2010)
bob's game
Touhou Genso Maruko
Gimmick Land: Tomato Atama no Himitsu
I Became Gay from Translating My New Roommate's Short Story
Cave Noire
Kanye Quest 3030
Namco Museum Series
WarioWare DIY Showcase
Doodle Champion Island Games
AR Games

Great list! Here's some I've found. Sorry if it's too much.

Sakura Taisen 3: Paris ha Moeteiru ka?
D2
Phase Paradox
Langrisser III
Legacy of Ys: Books I & II
Trauma Team
Heroine's Quest: The Herald of Ragnarok
VTuber Connect
Angel Wings
In The Rural Village of Nagoro
Parascientific Escape Cruise in the Distant Seas
Hatsune Miku: Project DIVA Extend
The Legend of Heroes II: Prophecy of the Moonlight Witch
The Caligula Effect: Overdose
Tales of Berseria
Stella Glow
Dragon Ball Fusions
Hyperdimension Neptunia U: Action Unleashed
Black Rock Shooter: The Game
Tales of Xillia
Higurashi no Naku Koro ni: Watanagashi-hen
Tomoyo After ~It's a Wonderful Life~
Snow
13 Sentinels: Aegis Rim
Grisaia: Phantom Trigger Vol. 8, Vol.4, Vol.3, Vol.2, Vol.6
Idol Magical Girl Chiru Chiru Michiru
Suzumiya Haruhi no Yakusoku
Hanagumi Taisen Columns
Tales of Phantasia: Narikiri Dungeon X
Love & Destroy
Boys Be 2nd Season
Assault Spy
Fire Emblem Warriors
Oni
Langrisser IV
Energy Breaker
Shin Megami Tensei: Liberation Dx2
Summon Night 6: Lost Borders
Xenosaga Episode II: Jenseits von Gut und Böse
Summon Night: Swordcraft Story 2
Ginga Fukei Densetsu Sapphire
Robolife: Days with Aino
Sakura Wars: So Long, My Love
Gun Star
Gal*Gun 2
Needy Streamer Overload
White Wings
Fault Milestone Two Side: Above
Memories Off 6: Next Relation
Blue Reflection: Second Light
Kara no Shoujo: Full Voice - HD Size Edition
euphoria
One: Kagayaku Kisetsu he
Shantae and the Pirate's Curse
Gokinjo Boukentai
Soul Hackers 2
Soundless - A Modern Salem in Remote Area
Overwatch
Nora to Toki no Koubou: Kiri no Mori no Majo
Sakura Wars
Sakura Taisen 4: Koi seyo, Otome
Chikyuu Bouei Shoujo Iko-chan: UFO Daisakusen
Fushigi no Dungeon: Fuurai no Shiren Gaiden - Onna Kenshi Asuka Kenzan!
Dramatic Dungeon: Sakura Taisen - Kimi Arugatame
Eithéa
Dorei to no Seikatsu -Teaching Feeling-
Senran Kagura: Skirting Shadows
Magic Knight Rayearth 2: Making of Magic Knight
Dungeon Of Windaria
Tokimeki Memorial 2
Aitakute... Your smiles in my heart
Shining Nikki
Tokimeki Memorial: Densetsu no Ki no Shita de
Life is Strange: Before the Storm
Digimon World Re:Digitize
Suicide Squad: Kill the Justice League
Pragmata
Pocky & Rocky with Becky
Drakengard 2
Possessioner
Yumeiri