Could you recommend fruit trees to put into an orchard, other than Apple, Pear, Plum, Cherry, which are already growing?
Peaches, nectarines and apricots are at best marginal outdoors, perhaps with heat of a sunny wall.
Medlars and figs are possibilities. Figs need a warm wall. Mulberry is possible.
Hazelnuts are an orchard tree and walnuts, which need a frew good summers in a row to do much.
There are lots of possibilities in soft fruit … cane fruits, currants, strawberries, blueberries.