A larger number of leaders were found among Eleazar's descendants than among Ithamar's, and they were divided accordingly: sixteen heads of families from Eleazar's descendants and eight heads of families from Ithamar's descendants.
NIV
Since there were more chief men found among the sons of Eleazar [because of the misfortunes of Eli, and Saul's slaughter of the priests at Nob] than among the sons of Ithamar, they were divided thus: sixteen heads of fathers' houses of the sons of Eleazar and eight of the sons of Ithamar according to their fathers' houses.
AMP
And there were more chief men found of the sons of Eleazar than of the sons of Ithamar, and thus were they divided. Among the sons of Eleazar there were sixteen chief men of the house of their fathers, and eight among the sons of Ithamar according to the house of their fathers.
KJV