My mother is house-sitting for my brother in south FL, and she sent me a massive mango from the enormous old tree in their back yard, which they suspect is seed-grow. They are in a traditionally Haitian neighborhood, but I’ve got no idea what cultivar it could be. This is not even the biggest one to ripen this year (she said the tree is just starting to ripen now, so it’s a pretty late variety), but clocks in over 3 lbs:
(Its cousin the ataulfo is in the second photo for comparison)
She usually lets them ripen on the tree, but picked this one early to make sure it would survive the cross-country trip. Hopefully it’ll still be tasty once it ripens up!