I couldn't decide what group to put these..
Quercus #7- leftovers
When you have an unknown oak leaf, look first for signs of "bristle tips" on the ends of the leaf lobes on the margin.
If no bristle tips, it's a White Oak group member (above, #2 and #3).
If bristle tips are evident, it's a Red Oak group member (#1 and #4).
All things considered, most of those 4 could be hybrids. #3 looks most like an Overcup Oak to me - Quercus lyrata).