This is a very interesting topic!!
As a teacher i see lots of
Bethany
Jack
Thomas/Tom
good sensible names i think
BUT i have a middle name Jean named after my grandmother and ive yet to meet any other person with that name!!
I have a friend with middle name Frances which she detests

I hardly ever see William anymore so if im lucky enough to have a son in the future William it is!!
The most unusual in my tree would have to be SMYRNA, middle names of both my late grandpa and his second cousin.
During my school years there was a girl named Marijuana

id hate to have that name!!