Huge number of anonymous.xpcd? When I list out launchctl, I'm seeing nearly a hundred instances of iterations of:

Command: sudo launchctl list | grep --invert-match com.apple yields:

1   -   0x7fb4b0f38e50.anonymous.launchd
711 -   0x7fb4b3e4dd70.anonymous.xpcd


What might these be or how would I go about prying open these to see what they are precisely and why there are so many instances of these?
From Apple's launchctl manual page (emphasis added):


  Note that you may see some jobs in the list whose labels are in
                the style "0xdeadbeef.anonymous.program".  These are jobs which
                are not managed by launchd, but, at one point, made a request to
                it.  launchd claims no ownership and makes no guarantees regarding these jobs. They are stored purely for bookkeeping purposes.