The following forms have not had a Shadow variant released in Pokémon GO. Functionally equivalent forms are not distinguished.
TForm
normal flyingSpearow
normal flyingFearow
electricPikachu
electricFlying Pikachu
electricRock Star Pikachu
electricPop Star Pikachu
electricCaptain Pikachu
electricPikachu Libre
electricRaichu
electric psychicAlolan Raichu
fairyClefairy
fairyClefable
normal fairyJigglypuff
normal fairyWigglytuff
bug grassParas
bug grassParasect
steelGalarian Meowth
fire rockHisuian Growlithe
fire rockHisuian Arcanine
psychicGalarian Ponyta
psychic fairyGalarian Rapidash
psychicGalarian Slowpoke
poison psychicGalarian Slowbro
fightingGalarian Farfetch'd
normal flyingDoduo
normal flyingDodrio
electric grassHisuian Voltorb
electric grassHisuian Electrode
normalLickitung
normalChansey
waterGoldeen
waterSeaking
ice psychicGalarian Mr. Mime
ice psychicJynx
normalTauros
fightingPaldean Combat Tauros
fighting firePaldean Blaze Tauros
fighting waterPaldean Aqua Tauros
normalDitto
normalEevee
waterVaporeon
electricJolteon
fireFlareon
psychic flyingGalarian Articuno
fighting flyingGalarian Zapdos
dark flyingGalarian Moltres
psychicArmored Mewtwo
psychicMew
fire ghostHisuian Typhlosion
normalSentret
normalFurret
bug poisonSpinarak
bug poisonAriados
water electricChinchou
water electricLanturn
electricPichu
fairyCleffa
normal fairyIgglybuff
fairyTogepi
fairy flyingTogetic
water fairyMarill
water fairyAzumarill
rockSudowoodo
grassSunkern
grassSunflora
bug flyingYanma
poison groundPaldean Wooper
psychicEspeon
darkUmbreon
poison psychicGalarian Slowking
psychicUnown
normalDunsparce
dark poisonHisuian Qwilfish
bug fightingHeracross
fighting poisonHisuian Sneasel
fireSlugma
fire rockMagcargo
water rockCorsola
ghostGalarian Corsola
water flyingMantine
normalSmeargle
fightingTyrogue
ice psychicSmoochum
electricElekid
fireMagby
normalMiltank
normalBlissey
psychic grassCelebi
dark normalGalarian Zigzagoon
dark normalGalarian Linoone
bugWurmple
bugSilcoon
bug flyingBeautifly
bugCascoon
bug poisonDustox
water grassLotad
water grassLombre
water grassLudicolo
water flyingWingull
water flyingPelipper
bug waterSurskit
bug flyingMasquerain
grassShroomish
grass fightingBreloom
bug groundNincada
bug flyingNinjask
bug ghostShedinja
normal fairyAzurill
normalSkitty
normalDelcatty
fighting psychicMeditite
fighting psychicMedicham
electricPlusle
electricMinun
bugVolbeat
bugIllumise
grass poisonRoselia
poisonGulpin
poisonSwalot
fireTorkoal
normalSpinda
normalZangoose
poisonSeviper
rock psychicLunatone
rock psychicSolrock
normalCastform
fireCastform Sunny
waterCastform Rainy
iceCastform Snowy
normalKecleon
grass flyingTropius
psychicChimecho
psychicWynaut
waterClamperl
waterHuntail
waterGorebyss
water rockRelicanth
waterLuvdisc
dragon flyingRayquaza
steel psychicJirachi
psychicDeoxys
psychicDeoxys Attack
psychicDeoxys Defense
psychicDeoxys Speed
bugKricketot
bugKricketune
grass poisonBudew
grass poisonRoserade
bugBurmy Plant
bugBurmy Sandy
bugBurmy Trash
bug grassWormadam Plant
bug groundWormadam Sandy
bug steelWormadam Trash
bug flyingMothim
bug flyingCombee
bug flyingVespiquen
electricPachirisu
waterBuizel
waterFloatzel
grassCherubi
grassCherrim Sunny
grassCherrim Overcast
waterShellos
water groundGastrodon
normalBuneary
normalLopunny
psychicChingling
steel psychicBronzor
steel psychicBronzong
rockBonsly
psychic fairyMime Jr.
normalHappiny
normal flyingChatot
ghost darkSpiritomb
normalMunchlax
fightingRiolu
fighting steelLucario
grassCarnivine
waterFinneon
waterLumineon
water flyingMantyke
normalLickilicky
fairy flyingTogekiss
bug flyingYanmega
grassLeafeon
iceGlaceon
electric ghostRotom
electric fireHeat Rotom
electric waterWash Rotom
electric iceFrost Rotom
electric flyingFan Rotom
electric grassMow Rotom
psychicUxie
psychicMesprit
psychicAzelf
steel dragonDialga Origin
water dragonPalkia Origin
grassShaymin
grass flyingSky Shaymin
psychic fireVictini
water darkHisuian Samurott
normalLillipup
normalHerdier
normalStoutland
grassPansage
grassSimisage
firePansear
fireSimisear
waterPanpour
waterSimipour
psychicMunna
psychicMusharna
psychic flyingWoobat
psychic flyingSwoobat
normalAudino
waterTympole
water groundPalpitoad
water groundSeismitoad
bug grassSewaddle
bug grassSwadloon
bug grassLeavanny
grass fairyCottonee
grass fairyWhimsicott
grassPetilil
grassLilligant
grassHisuian Lilligant
waterBasculin
ground darkSandile
ground darkKrokorok
ground darkKrookodile
iceGalarian Darumaka
iceGalarian Darmanitan
grassMaractus
dark fightingScraggy
dark fightingScrafty
psychic flyingSigilyph
ground ghostGalarian Yamask
darkZorua
normal ghostHisuian Zorua
darkZoroark
normal ghostHisuian Zoroark
normalMinccino
normalCinccino
iceVanillite
iceVanillish
iceVanilluxe
normal grassDeerling
normal grassSawsbuck
electric flyingEmolga
water ghostFrillish
water ghostJellicent
waterAlomomola
steelKlink
steelKlang
steelKlinklang
electricTynamo
electricEelektrik
electricEelektross
psychicElgyem
psychicBeheeyem
dragonAxew
dragonFraxure
dragonHaxorus
iceCubchoo
iceBeartic
iceCryogonal
ground steelGalarian Stunfisk
fightingMienfoo
fightingMienshao
dragonDruddigon
dark steelPawniard
dark steelBisharp
normalBouffalant
normal flyingRufflet
normal flyingBraviary
psychic flyingHisuian Braviary
dark flyingVullaby
dark flyingMandibuzz
fireHeatmor
bug steelDurant
bug fireLarvesta
bug fireVolcarona
steel fightingCobalion
rock fightingTerrakion
grass fightingVirizion
flyingTornadus Therian
electric flyingThundurus Therian
ground flyingLandorus Therian
dragon iceKyurem
dragon iceKyurem White
dragon iceKyurem Black
water fightingKeldeo
water fightingKeldeo Resolute
normal psychicMeloetta Aria
bug steelGenesect
bug steelGenesect Burn Drive
bug steelGenesect Chill Drive
bug steelGenesect Douse Drive
bug steelGenesect Shock Drive
bugScatterbug
bugSpewpa
bug flyingVivillon
fire normalLitleo
fire normalPyroar
fairyFlabébé
fairyFloette
fairyFlorges
grassSkiddo
grassGogoat
normalFurfrou
psychicEspurr
psychicMeowstic Male
psychicMeowstic Female
steel ghostHonedge
steel ghostDoublade
steel ghostAegislash
fairySpritzee
fairyAromatisse
fairySwirlix
fairySlurpuff
rock waterBinacle
rock waterBarbaracle
poison waterSkrelp
poison dragonDragalge
waterClauncher
waterClawitzer
fairySylveon
fighting flyingHawlucha
electric fairyDedenne
rock fairyCarbink
dragonGoomy
dragonSliggoo
dragonHisuian Sliggoo
dragonGoodra
dragonHisuian Goodra
steel fairyKlefki
ghost grassPumpkaboo
ghost grassPumpkaboo Small
ghost grassPumpkaboo Large
ghost grassPumpkaboo Super
ghost grassGourgeist
ghost grassGourgeist Small
ghost grassGourgeist Large
ghost grassGourgeist Super
iceBergmite
iceAvalugg
ice rockHisuian Avalugg
fairyXerneas
dark flyingYveltal
dragon groundZygarde 10%
dragon groundZygarde 50%
dragon groundZygarde Complete
rock fairyDiancie
psychic ghostHoopa Confined
psychic darkHoopa Unbound
fire waterVolcanion
grass flyingRowlet
grass flyingDartrix
grass ghostDecidueye
grass fightingHisuian Decidueye
fireLitten
fireTorracat
fire darkIncineroar
waterPopplio
waterBrionne
water fairyPrimarina
normalYungoos
normalGumshoos
fightingCrabrawler
fighting iceCrabominable
fire flyingOricorio Baile
electric flyingOricorio Pom-Pom
psychic flyingOricorio Pa'u
ghost flyingOricorio Sensu
bug fairyCutiefly
bug fairyRibombee
rockRockruff
rockRockruff Dusk
rockLycanroc Midday
rockLycanroc Midnight
rockLycanroc Dusk
poison waterMareanie
poison waterToxapex
groundMudbray
groundMudsdale
poison fireSalandit
poison fireSalazzle
grassBounsweet
grassSteenee
grassTsareena
fairyComfey
normal psychicOranguru
fightingPassimian
rock flyingMinior
normalKomala
fire dragonTurtonator
electric steelTogedemaru
ghost fairyMimikyu
water psychicBruxish
normal dragonDrampa
ghost grassDhelmise
dragonJangmo-o
dragon fightingHakamo-o
dragon fightingKommo-o
electric fairyTapu Koko
psychic fairyTapu Lele
grass fairyTapu Bulu
water fairyTapu Fini
psychicCosmog
psychicCosmoem
psychic steelSolgaleo
psychic ghostLunala
rock poisonNihilego
bug fightingBuzzwole
bug fightingPheromosa
electricXurkitree
steel flyingCelesteela
grass steelKartana
dark dragonGuzzlord
psychicNecrozma
psychic steelNecrozma Dusk Mane
psychic ghostNecrozma Dawn Wings
fighting ghostMarshadow
poisonPoipole
poison dragonNaganadel
rock steelStakataka
fire ghostBlacephalon
electricZeraora
steelMeltan
steelMelmetal
grassGrookey
grassThwackey
grassRillaboom
fireScorbunny
fireRaboot
fireCinderace
waterSobble
waterDrizzile
waterInteleon
normalSkwovet
normalGreedent
bugBlipbug
bug psychicDottler
bug psychicOrbeetle
darkNickit
darkThievul
grassGossifleur
grassEldegoss
normalWooloo
normalDubwool
electricYamper
electricBoltund
rockRolycoly
rock fireCarkol
rock fireCoalossal
grass dragonApplin
grass dragonFlapple
grass dragonAppletun
groundSilcobra
groundSandaconda
flying waterCramorant
waterArrokuda
waterBarraskewda
electric poisonToxel
electric poisonToxtricity
fire bugSizzlipede
fire bugCentiskorch
fightingClobbopus
fightingGrapploct
ghostSinistea
ghostPolteageist
psychicHatenna
psychicHattrem
psychic fairyHatterene
dark fairyImpidimp
dark fairyMorgrem
dark fairyGrimmsnarl
ghostCursola
fightingFalinks
bug iceSnom
bug iceFrosmoth
rockStonjourner
psychic normalIndeedee Male
psychic normalIndeedee Female
electric darkMorpeko
dragon steelDuraludon
dragon ghostDreepy
dragon ghostDrakloak
dragon ghostDragapult
fairyZacian
fairy steelZacian Crowned Sword
fightingZamazenta
fighting steelZamazenta Crowned Shield
dragon poisonEternatus
fightingKubfu
fighting darkUrshifu Single Strike
fighting waterUrshifu Rapid Strike
dark grassZarude
electricRegieleki
dragonRegidrago
normal psychicWyrdeer
bug rockKleavor
fairy flyingEnamorus Incarnate
fairy flyingEnamorus Therian
grassSprigatito
grassFloragato
grass darkMeowscarada
fireFuecoco
fireCrocalor
fire ghostSkeledirge
waterQuaxly
waterQuaxwell
water fightingQuaquaval
normalLechonk
normalOinkologne Male
normalOinkologne Female
bugTarountula
bugSpidops
bugNymble
bug darkLokix
electricPawmi
electric fightingPawmo
electric fightingPawmot
normalTandemaus
normalMaushold
fairyFidough
fairyDachsbun
grass normalSmoliv
grass normalDolliv
grass normalArboliva
normal flyingSquawkabilly
rockNacli
rockNaclstack
rockGarganacl
fireCharcadet
fire psychicArmarouge
fire ghostCeruledge
electricTadbulb
electricBellibolt
electric flyingWattrel
electric flyingKilowattrel
darkMaschiff
darkMabosstiff
poison normalShroodle
poison normalGrafaiai
grass ghostBramblin
grass ghostBrambleghast
grass groundToedscool
grass groundToedscruel
rockKlawf
psychicFlittle
psychicEspathra
fairy steelTinkatink
fairy steelTinkatuff
fairy steelTinkaton
waterWiglett
waterWugtrio
flying darkBombirdier
steel poisonVaroom
steel poisonRevavroom
steelOrthworm
rock poisonGlimmet
rock poisonGlimmora
ghostGreavard
ghostHoundstone
flying fightingFlamigo
iceCetoddle
iceCetitan
waterDondozo
dragon waterTatsugiri
poison groundClodsire
normalDudunsparce
dark steelKingambit
dragon iceFrigibax
dragon iceArctibax
dragon iceBaxcalibur
ghostGimmighoul
steel ghostGholdengo
grass dragonDipplin
grass ghostPoltchageist
grass ghostSinistcha
grass dragonHydrapple
Pokémon GO: A Quantitative Approach