Everyone does not know this. You just can't group one sets of Cabinet positions and say this is group A, group another and say that is B and yet another and say that is C.
Under Rice, State has been pretty much useless. I certainly won't call it "A level" under her leadership. Since the Financial crisis Treasury has been high-profile. Through the war Defense has been on the top. In the early 90's HUS was front and center. Energy maintains our nuclear weapons. I certainly don't consider that "C level." Education is what prepares our children for the future of our country. Justice has had its ups and downs. Transportation is pretty important don't you think? I mean, without it, the infrastructure in the country could be in shambles, which could have a domino effect. Without Veterans Affairs we could have millions of veterans suffering after a war.
Your grouping is senseless and irrelevant.
Are there more "prestigious" posts? Certainly, and State is right on top, but to group them like that is just ridiculous.
By all accounts he was second to Clinton and only got Commerce because Pritzker denied to undergo the vetting process. I just find it amazing that Richardson hates being Governor so much that he would take Commerce. I could assure, if and when Clinton leaves State, he gets it.