Ash:Sir Fetch’ed Will Stay The Same,In My Opinion Cinderace Is The Perfect Galar Starter Being Caught As A Little Scorbunny Then Evolving During The Third Trial In The Isle Or Armour Then Again Against Raihan,Ash Will Get A Kubfu In The Isle Of Armour Arc But When He Conquers The Tower Of Water With Arrogance And His Powerful Hits That Aren’t Swift Like The Rapid Strike Style He Wouldn’t Be Able To Evolve Till He Fought Bea In The Rematch,Grimmsnarl Is Caught As An Impadip In The Glimwood Tangle Then A Morgrem On The Way To Gordie And Evolving Against Pier’s Malamar To Stop Confuse Ray,Snom Is Caught While On His To Piers Then Evolve At Night In The Crowned Tundra And Lastly Eternatus Would Be Caught In The Darkest Day  
Misty:Gyrados,Starmie And Corsela Would Come With Her In Hulbury She Fishes Up A Sobble That Evolve In The Tournament That Takes Place Inbetween Gordie And Pier And Again In The Crowned Tundra,Kingler Would Be Caught In A Raid Den In The Isle Of Armour And After Opal When They Backtrack On Route 6 On The Way To Gordie Misty Gets A Dracovish With Her Temporarily Using Zacian In The Darkest Day Also She Now Competes In Galar Contests Since Showcases Are Stupid  
Victor:He Chooses Grookey Who Evolves In The Sinnoh Festival Arc That Is Inbetween Ash Vs Raihan And The Crowned Tundra Arc He Catches A Shiny Gengar In That Haunted Watch Tower In The Wild Area,In The Gangs First Raid Battle He Catches Snorlax,In The Sinnoh Festival He’s Given A Piplup Egg From Dawn That Evolves A Few Episodes After,He Catches An Alcrieme In A Cafe The Day Before Ash Battles Opal For A Rematch,His Second Capture Is A Blipbug That In The Isle Of Armour Evolves Twice And Similar To Misty Temporarily Uses Zamazenta  
Hop:He Gets A Grookey As A Starter Who Evolves During His Battle Against Kabu And Again After Gordie But Before The Tournament,He Catches A Cramorant To Deal With Ash’s Pikachu,Rhyperior Is Inspired By Zac Being The One Him And Leon Befriended,He Still Starts With Wooloo Who Evolves In The Tournament,In The Crowned Tundra He Reveals He Caught A Dragonair While Dealing With The Massive Regigas And By The League She’s Evolved,In The Route 5 Daycare He Gets A Riolu Egg Who Evolves Against Gordie’s Barbarcle  
Bede:I Don’t Have Anything Since His Team Evolves Off Screen  
Marine:Okay Here’s Some Pokémon,In The Sinnoh Festival In The Episode About The Hisui Starters She Gets An Oshawott Who Becomes A Samurott In The League And Toxitricty Was Give By The Team Yell Grunts  
Leon:We’re In The Thick Of It Gentlemen’s,He Owns All Three Kanto Starters And While There’s No Master 8 He Will Use Them In The Series Charizard Against Raihan In The Beginning,Blastoise In A Flashback Of Him Vs Mustard And Venusaur Against Sonia In The Finals Of His First Ever League(Also A Flashback)  
Klara And Avery Keep The In Game Teams  
Goh:He Starts With A Sobble Who Becomes Drizzle In The IOA And Inteleon In A Contest Battle Against Dawn,Scyther Gets A Trade Evolution With Avery And His Alakazam,Rowlet Gets Caught In A The Sinnoh Festival Who Evolves In The Grand Festival,Tauros Was Shown Off To Ash While He Was Preparing For Leon,Mamoswine Would Be Shown In The Ballonea Contest And Hydregion Was Caught In His Debut In The Wild Area Who Evolves Alongside Drizzle In IOA And Evolved By The Grand Festival And Lastly    
Dawn:She Catches A Lurantis While She Was In Alola And Shows Off To Goh And Marine Her Typloshin In The Sinnoh Festival   
That’s All Of The Major/Recurring Characters Teams

What If Ash Went To Galar