Hi Cogito!
Welcome to the forum, and thank you for posting these
I hope you'll keep posting and join in on the discussions here.
I agree with Double D, I recognize the example with the elongated spatulate blade and median ridge as distinctly Maasai.
I am curious on the distinct form of these Maasai blades, which is also the same as their sword, the 'seme'. It seems essentially that the spear is mounted with the sword blade, though altered in degree. I have often wondered about the spatulate form blade, which seems distinct among most African blade forms. Is it possible that the form may have developed from the blades seen on many Indian swords such as early khanda or the swords known as 'pattisa'?
There was of course prevalent trade from India's Malabar Coast to ports in East Africa, and trade into the interior of course entered Kenyan regions in quest for ivory among other commodities. Possibly the Maasai and neighboring tribes acquired examples of the Indian swords and adopted the blade form?
Best regards,
Jim