I’ll be that guy and say that as long as you’re outside the arctic, there is pretty much always a native crop to your area. Most of them have been forgotten or abandoned.
You have oaks, prunus, malus for just about every temperate region, and while oaks and apples can’t be landraced, some other tree crops are ripe for crossing.
In the midwest, I encourage people to cultivate new varieties of Camas and Sunchoke. I’m sure there are more species I’ve never heard of that could be taken under wing.