To understand Mboy who you need to understand his political life before the fallout with Jaramogi in 66-69. This problem with most Raila cultist - driven by emotional Jaramogism that has confined Luos to periphery.
Mboya had been long instrumental in 1950s - But for Odingasm everything revolve around their god !This article was written few days after his death
http://content.time.com/time/subscriber/article/0,33009,900985,00.htmlOnly 38, the handsome, articulate Mboya embodied many of the qualities so urgently needed by the fledgling nations of black Africa. He was a member of Kenya's second largest tribe, the Luo. But he saw his real loyalties to Kenya's detribalizing urban classes and made them his constituency.
He was an early and fervent apostle for his country's freedom, inspired by Jomo Kenyatta. But he deplored the violence and bloodshed of the Mau Mau uprisings against the British and refused to participate in them. He became the architect of independent Kenya's major documents, including its constitution. He also pleaded eloquently for a Marshall Plan for all Africa, for the creation of an African economy, and "the brotherhood of the 'extended family' in a United States of Africa."Mboya thought of himself as an African socialist, that catchall for moderate African reformers who favor mixed economies. Thoroughly pro-Western, with close ties both to the U.S. and Britain (he spent a year at Oxford), Mboya had no use for Soviet and Chinese efforts to gain a foothold in Kenya. It was on that issue that Mboya and his principal political enemy, Oginga Odinga, collided.
Odinga, a Luo like Mboya, is an emotional, radical tribalist with Communist leanings and support. Mboya helped oust Odinga as Vice President in 1966.
There is a tendency to glorify famous people killed before/in their prime. Based on his politics, he seems to have been a bit like Tuju, preferring to canoodle the ruler of the day, rather than promoting any clear ideology. I'd say a cross between Tuju and Ouko.