There are many Bantu ethnicities each with their own languages and religions across most of subsaharan Africa. The BaKongo with an important historical kingdom was one of these, and happens to be the one that left a significant mark on African derived religious traditions in the Americas.
While Bantu religions in Africa shared many similarities, they also had significant differences, and thus should not be considered interchangable. Few actually had any significant impact on New World practices.
There are also many speculative attempts to classify their practices. For better or worse, modern attempts claim a scientific character to them, or to Khemeticize them.
After having received requests to do so, I am planning a course to explore many of these themes.
"The King of Congo and the Bantu Roots of Afro-diasporic traditions" will look broadly at the diverse Bantu practices in Africa, from initiations to divination. It will also explore the Congo influences in the Americas from carnivals to spiritual practices. Along the way we will touch on the reasons for C or K in Congo/Kongo, and what that difference is not.
Cost for the course is $250. Email to register. As with all my classes all lectures and written/graphic materials are delivered asynchronously so that you can participate on your schedule and can review materials often.