Allot are invasives. Like Norway crap maple, black locust and tree of heaven. Doesn’t make for a productive ecosystem because our animals and insects aren’t adapted for them. And tree of heaven for example is the host of spotted lantern fly. They should all be removed where ever possible so the few native species still going strong can take over. Very dependent on location which trees. Here on the island it’s oak, hickory, red maple, tulip, sweet gum, sassafras, and black gum to name a few of the most prominent and least blight/disease prone.