Okay, that luckily didn't take very long. I bred 200 eggs, and while clearing out my boxes, among the last batch of 5 eggs, there was a shiny galar ponyta. Dunno if you want me to spoil gender/nature? Might be best kept a surprise I guess.
I saved regularly in an attempt to know exactly which egg hatches it (saved every 15 eggs hatched), without having to re-hatch too many if there actually was a shiny.
Anyway, after it hatched I reloaded the game, hatched all but the shiny egg and saved right before it hatched.
I can now offer you an egg that will hatch into a shiny Dream Ball Galar Ponyta (with 4 egg moves btw). After taking one step it should hatch (or possibly 2; I'm using a steam engine coalossal which speeds up hatching, which halves egg steps iirc).
The plus side of this is that if I send you it, and you hatch it, the shiny galar ponyta will have your OT and ID.
The downside is you can't see beforehand in the trade window if it really is a shiny, since all eggs look the same. And it's not like I can prove beyond a doubt what's in it.
So your choice; do you want me to hatch it and play it safe, or do you want me to send you the egg so you can have your own OT/ID on it ?
I have no intention of scamming you, but I also know it's not like I can prove what is in the egg (afaik anyway).
I'll take the regigigas for it, Hoopa requires home to trade and I got a new phone a couple months back and still haven't set up Home on it lol
On a side note, I got no idea if eggs can be traded on home. But they can in Sword/Shield at least. But that's a worry for later I guess.
Edit: yea nvm, I just tried pulling this egg into Home on the switch... it's not allowed.
Also, given that this didn't take very long. I don't mind shiny breeding my Love Ball Alolan Vulpix as well, since I kinda want both the regigigas and Hoopa.
Mainly didn't offer right away as I don't now beforehand how long I'll be breeding. My longest shiny breed was a little over 1600 eggs... so... yea those aren't fun lol.
We can either try and catch each other online or try and set up a trade (feel free to send me a PM or post a visitor message). My work week starts tomorrow so I'll only be available in the evenings my timezone.
Can also wait till I have both I suppose, but that might take a while (or not, RNG is a fickle thing).
P.s. If you'd prefer Dratini or sinistea over Alolan Vulpix I could do one of those instead. I spent all day breeding so I won't be starting that shiny breed til tomorrow after work anyway.
I mainly picked galar ponyta and alolan vulpix thinking you'd probably like those the most from the ones you listed. And poipole can't be bred so that one is out =p