1.Police Service of Pakistan,
2.District Management Group,
3.Foreign Service of Pakistan,
4.Customs and Excise Group,
5.Income Tax Group,
6.Pakistan Audit and Accounts Service,
7.Office Management Group,
8.Military Lands & Cantonments Group,
9.Comerce and Trade Group,
10.Railways (Commercial and Transportation) Group
11.Postal Group,
12.Information Group,

This is general perception but it varies person to person and year to year.