This was asked by another user in April so just copying my answers here
My list of shinies for those interested (all obtained by me)
Shiny Diglett in LeafGreen (now a Dugtrio)
Shiny Oddish in Emerald (now a Bellossum)
Shiny Grimer in HeartGold (now a Muk)
Shiny Patrat, Darumaka and Stunfisk in White
Shiny Barboach, Corphish, Roselia, Sharpedo and Feebas in Omega Ruby
Shiny Shellder in Y (now a Cloyster)
Shiny Entei, Suicune, Solgaleo and Zygarde from events
I have a wonder traded shiny Meganium too but I don't know if it's legit xD
Pokemon Go shiny list:
https://forums.bulbagarden.net/index.php?threads/pokemon-go-trainer-cards-thread.230125/post-6239741