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Longan, Jaboticaba, Miracle fruit in a pot, Carambola, Barbados Cherry to name a few.
Atemoya, rollinia, custard apple, green sapote, mamey, abiu, white sapote, tamarind, kwai muk, rain forest plum, grumichama, mamey apple, persimmon, achachairu, madruno, lemon drop mangosteen, caimito
A lot of the "Cherry type" fruit requires a lot of water to make them flower even when large bushes for me in S. Fl. Jaboticaba is especially water hungry and must be watered frequently for blooms... Cherry of the Rio Grande is close behind in my yard for needing water to get blooms... Thus my pleasure with them has dropped.Black or White mulberry has required none to almost no additional watering in my yard once the trees/bushes are a large size and both are preferred by me as my sweetness of choice prior to mango season... (The everbearing mulberry was dinky and pathetic in my yard & I ran over it with the lawn mower to end it's lousy existence of puny fruit in my yard)I see you already have 3 mulberry on the list....You could also try Rose Apple as some years I have gotten a good quantity..... But most all years the fungus hits the new growth in the spring moving to the fruit and destroying the crop unless a lot lot lot of fungicide is used.... Much more fungus prone than any of my mangos.... So, a large tree with a lot of fungus this year and a few fruit. It can go on like this with very little care if you can ignore the ugly brown leaves (so keep it in the back unless you want to spray fungicides a lot) ... But it is a very hardy plant requiring no water where I live now that it is larger.... (also the fungus does not affect the older limbs to any noticeable degree). The Rose Apples in the picture have a slightly sweet rose water taste and are fun to open the center around the seed and crunch the outer fruit shell.Dead leaves are covering the ground under the tree......A few survive without fungicide but pics show the fungus growth on new growth areas:::
Have considered dragon fruit?
Thornless Indian jujube!