nice pictures!
thanks for sharing!
1) is Pouteria sp. (rare, something like Nooga Sapote is what one expert said..i believe its one of several variations of the species, Pouteria torta)
2) is Mabolo, this one is the best i've had!!! excellent selection, the fruit is not too stringy, not cheesy tasting....has red skin, I think this variety is self fruitful
3) ? can't tell which tree you want me to identify...i see a big mango tree, and maybe an allspice tree (or bay rum)
4) ? can't tell from the photo, need a closer picture.