This seems to me to be one of the ethnic groups of Nigeria, according to the ones you have presented to us, @samminator, more interesting. Perhaps because they have known (or been able to) preserve more of their traditions, according to your information.
There are several things that call my attention. In the first place, the coincidence of the mythical account of the origin of the TIv people with that of other ancient peoples; for example, in South America, there is the myth of the origin of the Quechuas (traditionally known as "Incas"), through a couple (male and female) of envoys from Wiracocha to find the land where they would found Cozco.
Also the genealogical way by which they came to reproduce, populate their lands and establish themselves as an ethnic group.
The special clothing, besides being attractive, connects us with that sense of the sacred that nature has for ancient peoples; in this case, represented in the zebra.
In addition to the genealogical hierarchy, it is interesting its autochthonous forms of government, which, apparently, maintain mechanisms of community control.
It would have been interesting to see images of the instruments and some of their music. Thanks for your good post, @samminator.