Suebelle is popular...
My wife took some fruit to her co workers who are from Mexico and they loved them and have asked for more. When I got that tree about 30 years ago,it was because my old Sunset book raved at the custard like taste and "all year" fruit production from Suebelle. Sure enough,it has ripe fruit all year..just dangling next to green fruit and other branch tips have flowers.
One thing too..the last few years I've pruned it like you would a shrub...used hedge shears along with pole pruners to keep her from taking over the whole yard. And that's when we started to see larger fruits..more baseball sized then before when we got the all sizes.
I know there will never be a commercial White Sapote market..then can spoil in days...but if your getting them all year..at least you don't wait long to pick.