According literature black sapote is not cold tolerant, "young trees are damaged or killed at or below 30°F (-1°C) and mature trees at or below 28°F (-2°C)", BUT if you have winters like mine, mean January and February 40-45°F, lowest some years just a 2-3 days 30°F, but once in 5-7 years drop for a couple of days to 22-23°F, it goes dormant and don't suffer from cold. I noticed this in BS their first winter in greenhouse, knew from literature that they are not hardy, but they are very vigorous, my greenhouse is only 350 feet square meters, so I took a risk and put 3 of 5 in ground in spring, they were happy and last year I moved others outside. This February we had severe frezee down to 22°F , my 3 years seedlings behaved like deciduous, lost all the leaves and became dormant like cherries, apples, no damage at all, even for small branches, while my avocados and some citrus were killed to the ground. I can even add, they all flowered this spring, but unfortunately, didn't fruited ( I read first year it's normal). I think this numbers are right for, say, Florida, where they stay evergreen and I suggest, the cold hardy apples, plums would be damaged if cold is applied during summer.
I agree with drymyfolia about loquat ( damage temperature for flower), mine had good crop this year after exposing to 22°F. Would advise you to think about grafting it to quince to improve cold, heat and drought resistance.
I also recently started with most of plants mentioned here, so still evaluating their hardiness. Have to put my grafted cherimoyas next spring in ground, they are too big now.
Date palm doing fine here, my oldest 5 years seedling ( 3 years outside) flowered this year ( unfortunately male-)), just take it inside first 2 years or cover if outside. I just started with coquito this year but it supposedly hardy enough for my zone.
Some photos, if someone is interested: