I've noticed a number of titles missing there. Many of them look unreleased, but some of them definitely exist. Hope to see the comments from our Japanese PSX gurus 
SLPS-03165 Doubutsu Kyaranabi Uranai plus Renai Uranai Puzzle -- cover exists
SLPS-02052 Game no Tatsujin (Sunsoft Best) -- photo exists, available for sale
SLPS-01668 Hissatsu Pachinko Station (Sunsoft Best) -- cover exists
SLPS-02311~2 Knights of Genesis: Kamigami no Tasogare -- emulator screenshots exist and more screenshots
SLPS-03478 Pachi-Slot Teiou Maker Suishou Manual 2 - Ice Story (Best of The Best) -- cover exists
SLPS-02598~9 Pro Yakyuu Ninarou -- cover exists
SLPM-87346 Quiz Darakeno Jinsei Game Dai-2-kai! (PSOne Books) -- cover exists (and it looks more like The Best Takaramono series)
SLPS-03394 Slot! Pro 4 - Tairyou Special -- photo exists, available for sale
SLPM-86919 Superlite Gold Series - Minna no Othello -- cover exists
SIPS-60013 Adidas Power Soccer '97
SLPS-01816 Ai Igo 7
SLPM-87005~6 Alone in the Dark - The New Nightmare
SLPS-01028 Ano Subarashii Bentou o 2-do 3-do -- jap wikipedia says unreleased
SLPS-02136~8 Atlantis: The Lost Tales
SLPS-00784 Babujii
SLPS-00934 Battle Sports
SLPS-01654 Cardinal Syn
SIPS-60025 Cart World Series
SLPS-02418 Click Manga - Ginga Eiyuu Densetsu 3 - Amurittsu Akaigi
SLPS-02129 Click Manga - Marie no Atelier
SLPS-02618 Click Manga - Shin Dragon Half
SLPS-01615 es - Inishie no Kioku
SLPS-00126 FEDA Remake
SLPS-01908~9 Heart of Darkness
SLPS-02476 Honkaku Taisen Shougi Sei
SLPS-01273 Honya
SLPS-03194 Jissen Pachinko Hisshouhou! - CR Tsuri Baka Nisshi & CR Ramen Club
SLPM-86325 Jissen Pachi-Slot Hisshouhou! Single - Space Wing
SLPS-00627 JTCC - Japanese Touring Car Championship
SLPS-01597 Madou Reishi Shuon
SLPS-01254 Maximum Force
SIPS-60009 MLB Pennant Race
SLPS-03243 Pachitte Chonmage Tatsujin 2 - CR Jurassic Park
SLPS-02423 Parts' Dik
SLPS-00289 Pile-Up March -- unseen64 says unreleased
SLPS-02614 PJ's Groove
SLPM-86448 Ready 2 Rumble Boxing
SLPS-00724 Return Fire
SLPS-01979 S.C.A.R.S.
SLPS-02073 SD Hiryuu no Ken - Episode Ougi no Sho
SLPS-00942 Seiryuu Densetsu Gaiden
SLPS-02921 Street Boarders USA
SLPS-02118 Super Chinese Fighter DX
SLPM-86458 SuperLite 1500 Series - Assault Soldier
SLPM-86481 SuperLite 1500 Series - Monkey Hero
SLPS-01635 Suzuka 8-jikan Taikyuu Road Race
SLPM-86522 Swing (Major Wave)
SLPS-01425 Toki o Kakeru Shoujo
SLPS-02610 Virtua Pachi-Slot Olympia Special 2
SLPS-02031 Virtua Pachi-Slot IV
SLPS-00464 Battle Bugs
SIPS-60026 Fire Panic
SCPS-10100 Gran Turismo 2
SLPS-02622 Lunar Wing - Toki o Koeta Seisen
SLPS-02302 Simple 1500 Series vol.016 - The Pachi-Slot
SLPM-86732 Chess 2000 (Reprint)
SLPS-03125 Doki Doki Poyatchio (Reprint) -- sometimes listed as Zero Tours （ゼロ・ツアーズ）, which one is correct?
SLPM-87038 Nijiiro Dodgeball Otome-tachi no Seishun (DX Pack)
SLPM-86731 Saikyou no Go - The Strongest Game of Go (Reprint)
SLPS-00889 Simulation Zoo (Reprint)
SLPS-03091 Virtual Hiryuu no Ken (Reprint) -- sometimes listed as Virtual Hiryuu no Ken' (dash)
SLPM-86296 SuperLite 1500 Series - Gekitotsu! Yonku Battle
SLPM-86348 SuperLite 1500 Series - World Cup Golf
SLPM-86521 Lucifer Ring (Major Wave)
SLPM-86951 Castlevania Chronicle: Akumajou Dracula (Playstation the Best)
SLPS-02793 Deadly Skies (PlayStation the Best)
SLPS-02823 Pitball (PlayStation the Best)
SLPS-91432 Syphon Filter (PS One Books)
SLPM-86889 First Queen IV - Varcia Senki (Cyclone's Best)
SLPM-86890 Gamera 2000 (Cyclone's Best)
SLPM-86891 Dodonpachi (Cyclone's Best)
SLPM-86892 World Tour Conductor - Sekai Yume Kikou (Cyclone's Best)
SLPM-87122 Advanced Variable Geo (NatsuColle Series Vol.1)
SLPM-87126 Project Gaiaray (Syscon NatsuCole Series Vol.2)
SLPM-87124 Lup Salad - Lupupu Cube (NatsuColle Series Vol.3)
SLPM-87134 Wizard's Harmony (Syscon NatsuCole Series Vol.4)
SLPM-86616 Psychic Force (Taito 2000 Series) -- TCPS-10030
????-????? Mass Destruction - Otousan ni mo Dekiru Soft -- unreleased for PSX? listed on suruga-ya site
TCPS-90004 Shadow Man -- SLPS/SLPM code is unknown
TCPS-10002 Space Invaders 2000 -- SLPM-86153 doesn't have this TCPS code, maybe some reprint?
TCPS-10049 The Power Shovel + Controller Genba Set -- SLPS/SLPM code is unknown
VX235-J2 Techno BB (Konami the Best) -- SLPS/SLPM code is unknown
SLPS-01967 Waku Puyo Dungeon Expert [Disc2of2] -- I've only seen SLPS-01966 1CD-version