Ataulfo,marketed as Champagne mango. Undeveloped Ataulfo ( market as Popcorn mango), these are sold in China in Box like boxes with about 15 little mangoes per box. They have no seed inside the husk. Bought them with their brand name tag on them at a supermarket in Guadalajara, Mexico a couple of years ago. I think the Popcorn mango targets children.
Comparing IndoChinese mangoes: I have tried some Thai mangoes while in Thailand last month: NDM(regular, tong, supersized), Mahachanok, Okrung, Raet, Chokanan etc... . IMO Ataulfo is just as good.