Thanks guys, after it stops raining, I may take a twig from one of the larger ones, scan it, and post it.
I'd like to grow paw paw, but I've never seen it grow in the wild and don't know what companion plants would grow with it.
I did plant some shagbark hickory seedlings, and they have a different leaf bud. Could this be pignut hickory or something? I did think of a nut tree, but I'm not so good at ID'ing them.
Thanks for the responses. If they are native, I'll move the seedlings out of the path of my mower and into the woods or hedgerow. I love getting free trees--lots of pagoda dogwood seedlings showing up around the property!