It would be interesting to find out if they are "forced" to take up these jobs or whether there is an inclination. My own people dominated Kenya Railways and ended up piling up in areas where the train had stations - all over Kenya. They had formed the labour force that built the railway alongside coolies and naturally, it passed from father to son and grandson. It also helped that successive ministers of Transport, Power and Communication were Luos. Domination of KPLC ended recently, much to my relief.
So there is a factor that leads Luhyas to quietly dominate the International Civil service; Coastals to master the Middle East and Somalis to take over Europe and North America.
Certainly. It would be decent. This is not toilet where you bare it all. Just try to qualify because there is no scientific or factual basis to allege kikuyus all love gov jobs. A rewording would achieve your objective without sounding base, crude and tribal.
Would it help if I dressed it up in scientific niceties? There you have senior officials of one ministry and they come from the same region.