I’ve got some you can work on but they are identified.
Examining ’my’ right angle spike I notice the inside surface of the square shank is banged up way more than any other. This suggests the spike end was imbedded into something, presumably wood, and was then hammered back out. That suggests further, at least to me, that it would have been part of a hand held device maybe a short pike pole type of implement to swing to grab then pull.
Still it would have to be held to the handle and there are no signs of set screw or similar holding marks. And if you ever worked in a saw mill there’s lots better tools for grabbing and pulling then this thing. So the above is just a guess.