The center rib as a direct extension of the socket on spear 1 is reminiscent of spears from Somalia/Ethiopia.
There are also images with spherical decoration, but these are further from the blade:
The First one from here:
https://african-weapons.com//gallery?3-x-ethiopia
The second one I found in several variations, this one from here:
https://www.ebid.net/ie/for-sale/ant...-177643437.htm