Here are some more pusher types to add to the list. I tried to ensure that all had some kind of active service record, not including evaluation prototypes or designs not built.
With a couple of exceptions noted below, all of these served in the First World War.
Fighters and bombers with single pusher propellers:
AGO C.II reconnaissance aircraft, single pusher propeller.
Various German bombers, each with two pusher propellers:
Friedrichshafen G.II and G.III;
Rumpler G.I, G.II and G.III;
and Albatross G.III.
Flying boats with single pusher propeller:
AD Flying Boat;
Curtiss Model F;
Beriev MBR-2; and
(The last two were operational in the Second World War.)
Grigorovich M-16 reconnaissance floatplane, single pusher propeller.
There were also a number of aircraft that had both tractor and pusher propellers, such as the
Caproni Ca.4 bomber (two tractor propellers and one pusher propeller) and the
Zeppelin-Staaken R.VI bomber (two tractor propellers and two pusher propellers).