Just trying to figure out what’s growing around the ponds in my neighborhood.

Any ideas what these are? I live in south OKC. First ones look like large elm leaves, but the trunk doesn’t look like any elm I’m familiar with. I think the last two might be the same species with the last one being new growth. The Arbor Day ID tool is telling me it’s a sassafras tree, but it doesn’t seem to smell like they supposedly do.