I believe they are related since modogo who is josky's cousin or nephew said that he was ninho's uncle
it could be the fact that in some of our families you dont necessarily take the father's name,for example wazekwa his direct younger brothers are jp lukombo and germain kitemoko,no sign of wazekwa in their names
or werra being ngiama makanda,patrice ngoy musoko,jonas mbese,guy nkoyi