The business website Quartz made an interesting observation last week: The people Donald Trump has picked for his Cabinet so far are worth more than a third of American households combined.

Why? Because Trump's Cabinet has pretty deep pockets. Among his picks to lead government departments and otherwise serve his administration are elected officials, former generals or veterans, and wealthy individuals. None of those things are uncommon, of course; elected officials and the wealthy and the overlap between the two are fixtures in Washington politics.

In an effort to describe Trump's picks, we created a Venn diagram showing each and the position he or she holds in terms of wealth, experience — and, because it has been raised, relationships to Russia. In many cases, a person's net worth was difficult to ascertain.

Donald Trump, president-elect. Trump is a billionaire and, in a month, he will be an elected official.

The four big Cabinet positions

James Mattis, Defense. Mattis is a retired Marine Corps general.

President-elect Donald Trump introduces retired Marine Gen. James N. Mattis, his pick for secretary of defense, to the crowd in North Carolina. (The Washington Post)

Steven Mnuchin, Treasury. Mnuchin is a Wall Street billionaire.

Jeff Sessions, Justice. Sessions is a senator from Alabama and served in the Army Reserve. In 2010, his net worth was $15.8 million.

Rex Tillerson, State. Tillerson is chairman and chief executive of ExxonMobil. Before taking over the company, he ran its operations in Russia, including securing a landmark agreement to drill in the Russian Arctic.

Donald Trump is nominating Rex Tillerson for secretary of state. The Post's Anne Gearan explains what he brings to the table and why Congress could reject him (Sarah Parnass/The Washington Post)

Other Cabinet positions

Ben Carson, Housing and Urban Development. Carson is one of two picks who doesn't fall squarely into one of these circles. His estimated net worth is in the low millions.

Elaine Chao, Transportation. Chao is the other one. Senate Majority Leader Mitch McConnell (R-Ky.), her husband, reported a net worth of $27 million in 2010.

Betsy DeVos, Education. DeVos married into the DeVos family, which made its fortune through Amway. She was formerly chairman of the Republican Party in Michigan.

John Kelly, Homeland Security. Kelly is a retired Marine Corps general.

Retired Marine Gen. John F. Kelly is the secretary of homeland security under President Trump. Here's what you need to know about him. (Sarah Parnass, Osman Malik/The Washington Post)

Rick Perry, Energy. Perry is a former governor of Texas and a veteran of the Air Force.

Tom Price, Health and Human Services. Price is a member of the House from Georgia.

Scott Pruitt, Environmental Protection Agency. Pruitt is the attorney general of Oklahoma.

Andrew Puzder, Labor. Puzder is chairman of the parent company to Hardee's and Carl's Jr.

President-elect Donald Trump is nominating fast-food executive Andrew Puzder as secretary of labor. Here's what you need to know about him. (Sarah Parnass, Osman Malik, Danielle Kunitz, Adriana Usero/The Washington Post)

Wilbur Ross, Commerce. Ross is another Wall Street billionaire who, in the administration of Bill Clinton, was on the board of the federal U.S.-Russia Investment Fund.

Ryan Zinke, Interior. Zinke is a former Navy SEAL who also serves as Montana's at-large representative to the House.

Other appointments

Michael T. Flynn, national security adviser. Flynn is a former general who, in 2015, was hired by Russia Today to give a speech and attend a banquet with Russian President Vladimir Putin.

Nikki Haley, ambassador to the United Nations. Haley is the governor of South Carolina.

Linda McMahon, Small Business Administration. McMahon is chief executive and co-founder of World Wrestling Entertainment, which made her and her husband, Vince McMahon, enormously wealthy.

Mike Pompeo, CIA. Pompeo is a member of the House from Kansas and a veteran of the Army.

Vincent Viola, secretary of the Army. A U.S. Military Academy graduate, Viola also made his fortune on Wall Street.

The count as it stands: five billionaires, three retired generals, seven elected officials. And a couple of none-of-the-aboves.

The Washington Post's Jenna Johnson explains what attracts Trump to the former generals he has tapped to serve in his administration. (Bastien Inzaurralde/The Washington Post)