My oaks and maples are under attack by honeymushroom. I am slowly adding / replacing with resistant trees and shrubs. So far I have planted elderberries and pawpaws. Zone 6, very poor, rocky soil. Any other good fruit and nut trees I can add?
My peach tree is 5 or 6 years old and the honey mushrooms haven't affected it yet. It's about 15' from the stumps of 3 oaks that died around the time I planted it (I think it was a combination of stress from honey mushroom, gypsy moths, and drought over a 2-year period). They haven't affected the young apricot nearby, as far as I can tell, though it's a pretty wimpy tree to begin with. I'm not having a lot of luck with apples, pears, asian pears, and quinces, but it might not be honey mushrooms killing the seedlings.
Pecans! There is a lot of pecans in my area. Hickory can produce nuts but it can be hit or miss. Black walnuts are another nut tree but the juglone would be an issue. Chapter 9 of "Gaia's Garden" talks about a walnut/hackberry guild. Here is a link to Gaia's Garden wiki https://permies.com/wiki/40202/Gaia-Garden-Toby-Hemenway . Apples and pears would be good fruit trees. The only issue I can see with apple trees is cedar apple rust (Gymnosporangium juniperi-virginianae). Have you looked into persimmons?
You should never forget that every creature has its purpose in the cycle of nature and can also be very important to humans. Sepp Holzer's Permaculture