Which Sync Pairs can I unlock through the story mode?

Which Sync Pairs can I unlock through the story mode?
Pokémon Masters Guide

Added: Sep 19th, 2019

Starting the story mode and finishing it until the end will provide you with a lot of Sync Pairs that can join your team. Here are the ones that you can find on each chapter.

Chapter	Sync Pair
Chapter 1	Rosa & Snivy
Chapter 1	Whitney & Miltank
Chapter 2	Barry & Piplup
Chapter 3	Flannery & Torkoal
Chapter 4	Erika & Vileplume
Chapter 5	Skyla & Swanna
Chapter 6	Korrina & Lucario
Chapter 7	Norman & Slaking
Chapter 8	Pryce & Seel
Chapter 9	Iris & Haxorus
Chapter 10	Hapu & Mudsdale
Chapter 11	Hau & Raichu (Alolan)
Chapter 12	Flint & Infernape
Chapter 13	Clair & Kingdra
Chapter 14	Viola & Surskit
Chapter 15	Nanu & Persian (Alolan)
Chapter 16	Koga & Crobat
Chapter 17	Acerola & Palossand
Chapter 18	Cheren & Stoutland