Maybe echoing what was said earlier, there is no "wild rootstock" in most of the U.S. Where there is no fig wasp, the only choices would be (a) clones from cuttings or layers, and (b) trees grown from seeds after artificial insemination. I think it's safe to say that 99% of the trees east of the Mississippi are clones, started either from a cutting or a layer.
So in the vast majority of the U.S., growing from seed is very rare and wild seed doesn't exist. Of course, grafts may have been added to the cloned wood stock.