found in Kansas City, KS area.
SOLVED: Unknown sapling
#1 picture is different from #2 & #3.
#2 and #3 are the devilish invasive exotic species Pyrus calleryana - Callery Pear.
Not sure what #1 is, as the picture doesn't offer a lot of information with just a few malformed leaves, though it does show us dentate leaf margins. Show us more of that plant, like branches, stems, trunk, leaves that are whole, etc.
It is always good to show the whole plant first, and then progressively more detailed images of component parts of the plant.
Agreed, you have two different trees there. Pic #1 might be a hawthorne of some kind. Agree on pics 2 &3. Sadly this horrid tree has taken over acres of open fields (and not so open) here in N.J. .Not at all desirable. And yet landscapers still keep planting it!