I have honestly yet to get any shiny pokemon in Sword and Shield. I spent so long trying to get one from both eggs and the trick you do by beating pokemon, but I still haven't encountered a single shiny pokemon in Sword and Shield. I guess I could say Zeraora, but it was an event pokemon and I just don't count it.
I didn't start shiny hunting till after Shiny Charm and still no luck. I've tried Noctowl, Riolu, Rookidee, and a far many other pokemon. So with so much bad luck, I just stopped shining hunting, But I am thinking about trying to get Shiny Pumpkaboo, at least till the end of October.
Edit: Actually I lied, I completely forgot about the random Shiny Comfey I got when I was looking for Alolan Digglet on Isle of Armor. So yeah, I did get that... as far as I can remember, that is the only one I've gotten and it was by complete accident.
My first one was also a shiny magikarp from that event. I got a bunch of shinies from trading on home. Unfortunately, I have no clue how legit they are. The first real shiny I caught myself was Obstagoon.
Scorbunny bred from one I received in a wonder trade.
I've since bred 2 shiny Rookidee, several shiny Grookies (looking for a female and still haven't gotten it but moved on for now), and 2 shiny Charmanders as well.
I was talking about how I liked Wooloo's Shiny with a friend, who's a bit more into the games than I am, when they suddenly decided to give me one as a gift. Still stored in a box somewhere, much appreciated.
I still haven't actually run into a shiny on my own! That's life for you.
Currently trying to beat Sword without attacking. You can read the log and see my progress here.
My first shiny was either the Shiny Zerora everyone got when the Isle of Armor released. If you don't count those, then I got a Shiny Snover by complete luck while doing a Nuzlocke, and the first one I genuinely hunted was a Shiny Wooloo after I got the Shiny Charm (took a bit over 1000 encounters)