What type of clan members joins the white man's religion in Things Fall Apart?

All sorts of clan members join Christianity. At first it is the lower class of people, efulefu, men without title and disdained by the clan. Nweke, a woman who repeatedly bears twins is one of the first women to join. Men, women and children of no title join the church in Mbanta. Eventually osu join the church and are accepted. Eventually, even men of title join the church in other villages, casting away their titles and the Gods of their fathers.