Harrow delight, ayers, Duchess D’ Angoulme, and improved kieffer / Kieffer might be good choices of pears. There are many others. They ripen in July / August , September , Oct/Nov . You dont want them all ripe at once. Pigs rub trees and kill them. You will need to protect the trunks. You might also consider persimmon and pawpaw. The nuts like pecan, hickory, black walnut, acorn, english walnut, heartnut, butternut, and chestnuts would all be readily consumed. Hazelnut bushes are too small to hold up to pigs.
If you fenced hazelnuts off like mine shown below, they would be fine. They are no match for pigs for even a day or two.
My grandpa and i observed his hogs in the very wooded rocky area he owned many times. We discussed them eating acorns, black walnuts , snakes, and other things many times. Noticed a pig once in the distance, and i told my grandpa i couldn’t tell what that was the sow was eating. I observed a long time, but eventually, my grandfather told me the hog was cracking rocks in its jaws to get to the minerals in the rock. He said, “Remember that don’t underestimate the half wild sows.”