Is anyone willing to give their input on super-unique boy names?

We have 3 boys already whose names are: Quinton Valor Raine, Luken Stanley Frederick and Raleigh Bannon Roux. The middle names for our 4th boy will be John Darcy after grandfathers... Top choice so far is Cohen. I do not want to stick my child with the flavor name of the week so Dylan, Logan, Rylie and anything else of the sort is out. In needs to be different and something I have seldom heard. Tough one. Any ideas?