so my friend Iain call me I will try to help a little bit.
First with this tiny pictures it's really difficult to ID the spear points and not to see the spear shoes and shafts makes it not easier.
The first point could be from the Fang in Gaboon.
The only point I can ID clear is the one in the bottom line on the right, it's from the Ngbandi in DRC. A complete spear you can see here ....
http://www.africanarms.com/alle-alben/!/oa/6644091-84320274/
Left of this one is possibly from Burundi, Rwanda (Tutsi people).
Above the Ngbandi could be from the Sudan, but not clear to see on the picture.
The last I don't know.
I hope it helps a little bit and whenever better pictures are available please show them.
Best
Wolf