Here are some quick doodles in the form of made-up character heads.
...Top left -- when I completed the shape of the head, the hair and scribbled in his glasses -- I thought of Random Wilder from Dan Clowes' Ice Haven, but I wasn't trying to go after him; I just didn't fight the resemblance when I started refining him. Otherwise, they're all straight outta me head in freestyle fashion.
...Ooh! A little bit of Palin-hair on the lower left lady, I suppose, but that wasn't on purpose.