Off hand here’s Central Texas fruit trees - Pear, Peaches, Plums, Apricots (they need a mate), Figs, Persimmons, and I hear some are growing Satsuma (mandarine) orange trees. Also, olives are beginning to be grown in Central TX. There are apples at the nursery but I don’t know about those and the chill they need. Mayer Lemons and Limes can be container grown but need to be brought inside during the winter.
Also, check out - http://aggie-horticulture.tamu.edu/fruit-nut/
Olives... That’s the ticket.
I have found that citrus is difficult. The only tree that I have found to be cold tolerant is a Flying Dragon. It's another slow grower. Of course, I have seen Ponderosa Lemon trees in the city that survive and produce fruit.
Japanese Loquat is a tried and true tree for the S.A. area. It produces lots of fruit that look and taste like apricot.