After some of casual browsing I discovered what's apparently called bubblegum snows and I'm smitten by them.
But aside from a couple places that tell you they exist in the first place it doesn't seem like there's a reliable way to search for them otherwise. Morph Market doesn't have a bubblegum tag, just snows. Furthermore from what I've seen, you can't even tell if you have a bubblegum until it grows and develops the green. I've read that they're simply a linebred phase of snows that kinda just, appears? So I assume you either throw the dice and hope you get one as a hatchling or try to find an adult?
It's all quite confusing.