I don't know, Glenn.
The top one in the picture is a 1797 model 1(iirc) US Naval boarding pike with a leaf shaped blade.

I would expect that privateers and some merchantmen/whalers would have also carried boarding pikes as part of their defensive arms.
I admit I'm fishing more than a bit here; but there must have been some variation in pikes that were made during that time; many must have come from local smithys.