President-elect Donald Trump does not have the traditional cadre of Washington insiders and donors to build out his Cabinet, but his transition team has spent the past several months quietly building a short list of industry titans and conservative activists who could comprise one of the more eclectic and controversial presidential Cabinets in modern history.

Trumpworld has started with a mandate to hire from the private sector whenever possible. That’s why the Trump campaign is seriously considering Forrest Lucas, the 74-year-old co-founder of oil products company Lucas Oil, as a top contender for Interior secretary, or donor and Goldman Sachs veteran Steven Mnuchin as Treasury secretary.

Story Continued Below

He’s also expected to reward the band of surrogates who stood by him during the bruising presidential campaign, including Newt Gingrich, Rudy Giuliani and Chris Christie, all of whom are being considered for top posts. A handful of Republican politicians may also make the cut, including Sen. Bob Corker for secretary of state or Sen. Jeff Sessions for secretary of defense.

Trump's divisive campaign may make it difficult for him to attract top talent, especially since so many politicians and wonks openly derided the president-elect over the past year. And Trump campaign officials have worried privately that they will have difficulty finding high-profile women to serve in his cabinet, according to a person familiar with the campaign’s internal discussions, given Trump’s past comments about women.

Still, two Trump transition officials said they received an influx of phone calls and emails in recent weeks, as the polls tightened and a Trump White House seemed more within reach.

So far, the Trump campaign and transition teams have been tight-lipped about their picks. (The Trump campaign has declined to confirm cabinet speculation.) But here’s the buzz from POLITICO’s conversations with policy experts, lobbyists, academics, congressional staffers and people close to Trump.

Secretary of state

Former House Speaker Gingrich, a leading Trump supporter, is a candidate for the job, as is Corker, current chairman of the Senate Foreign Relations Committee. The Tennessee senator has said he’d “strongly consider” serving as secretary of state.

Trump is also eyeing former U.S. Ambassador to the United Nations John Bolton.

Treasury secretary

Trump himself has indicated that he wants to give the Treasury secretary job to his finance chairman, Mnuchin, a 17-year-veteran of Goldman Sachs who now works as the chairman and chief executive of the private investment firm Dune Capital Management. Mnuchin has also worked for OneWest Bank, which was later sold to CIT Group in 2015.

Secretary of defense

Among the Republican defense officials who could join the Trump administration: Sessions (R-Ala.), a close adviser, has been discussed as a potential defense secretary. Former National Security Adviser Stephen Hadley and former Sen. Jim Talent (R-Mo.) have also been mentioned as potential candidates.

Top Trump confidant retired Lt. Gen. Mike Flynn, former director of the Defense Intelligence Agency, would need a waiver from Congress to become defense secretary, as the law requires retired military officers to wait seven years before becoming the civilian leader of the Pentagon. But Trump’s chief military adviser is likely to wind up in some senior administration post, potentially national security adviser. And other early endorsers, like Rep. Duncan Hunter (R-Calif.), could be in line for top posts as well.

Attorney general

People close to Trump say former New York City Mayor Giuliani, one of Trump’s leading public defenders, is the leading candidate for attorney general. New Jersey Gov. Christie, another vocal Trump supporter and the head of the president-elect’s transition team, is also a contender for the job — though any role in the cabinet for Christie could be threatened by the Bridgegate scandal.

Another possibility: Florida Attorney General Pam Bondi, though the controversy over Trump’s donation to Bondi could undercut her nomination.

Interior secretary

Lucas, the 74-year-old co-founder of oil products company Lucas Oil, is seen as a top contender for Interior secretary.

Trump’s presidential transition team is also eyeing venture capitalist Robert Grady, a George H.W. Bush White House official with ties to Christie. And Trump’s son Donald Trump Jr., is said to be interested in the job.

Meanwhile, a person who spoke to the Trump campaign told POLITICO that the aides have also discussed tapping Sarah Palin for Interior secretary. Trump has said he’d like to put Palin in his cabinet, and Palin has made no secret of her interest.

Other possible candidates include former Arizona Gov. Jan Brewer; Oklahoma Gov. Mary Fallin; Wyoming Rep. Cynthia Lummis; and Oklahoma oilman Harold Hamm.

Agriculture secretary

There are several names being considered by Trump aides for agriculture secretary, according to multiple sources familiar with the transition. The president-elect has a deep bench to pull from, with nearly 70 leaders on his agricultural advisory committee.

The most controversial name on the transition’s current short list is Sid Miller, the current secretary of agriculture in Texas, who caused a firestorm just days ago after his campaign’s Twitter account referred to Hillary Clinton as a "c---." Miller said it was a staffer mistake and apologized.

Other names include Kansas Gov. Sam Brownback; Nebraska Gov. Dave Heineman; former Georgia Gov. Sonny Perdue; and former Texas Gov. Rick Perry; as well as Charles Herbster, Republican donor and agribusiness leader; and Mike McCloskey, a major dairy executive in Indiana, according to Arabella Advisors, a firm that advises top foundations and closely tracked both transition efforts.

Bruce Rastetter, a major Republican donor in Iowa, and Kip Tom, a farmer who ran for Congress in Indiana this year but was defeated in the primary, are also among those being considered, Arabella said.

Other top Republican insiders expect that Chuck Connor, president and CEO of the National Council of Farmer Cooperatives; Don Villwock, president of the Indiana Farm Bureau; and Ted McKinney, current director of the Indiana Department of Agriculture in administration of Gov. Mike Pence, are also likely to be in the running for the post.

Commerce secretary

Trump is expected to look to the business community for this job.

Billionaire investor Wilbur Ross, a Trump economic adviser, could fit the bill. Dan DiMicco, former CEO of steelmaker Nucor Corp and a Trump trade adviser, is another possibility.

Trump is said to also be considering former Texas Gov. Perry, former Arkansas Gov. Mike Huckabee and even Christie for the job.

Labor secretary

As with many Cabinet posts under Trump, the campaign and transition staff have been looking for a CEO or executive to lead the Labor Department. One name being bandied about is Victoria Lipnic, commissioner of the Equal Employment Opportunity Commission since 2010. She also served as an assistant secretary of labor for employment standards from 2002 until 2009. The Mitt Romney transition team reportedly also considered her for a top labor post in 2012.

Health and Human Services secretary

Among the names receiving buzz: Florida Gov. Rick Scott, Gingrich and Ben Carson, a former GOP presidential candidate. Carson has received the most attention lately for HHS, even from Trump himself.

At a recent anti-Obamacare rally, Trump went out of his way to praise Carson by calling him a "brilliant" physician. "I hope that he will be very much involved in my administration in the coming years," Trump said.

One longer shot would be Rich Bagger, executive director of the Trump transition team and a former pharmaceutical executive who led, behind closed doors, many of the meetings this fall with health care industry donors and executives.

Energy secretary

Continental Resources CEO Hamm has long been seen as a leading candidate for energy secretary. Hamm, an Oklahoma billionaire who has been a friend of Trump’s for years, has been the leading influence on Trump’s energy policy during the campaign.

If Hamm passes, venture capitalist Robert Grady is also seen as a top candidate, though he could also be in line for Interior.

Education secretary

Trump has made clear the Education Department would play a reduced role in his administration — if it exists at all. He has suggested he may try to do away with it altogether.

The GOP nominee has also offered a few hints about who he would pick to lead the department while it’s still around. Among those who may be on the shortlist is Carson, the retired neurosurgeon who ran against Trump in the primary but later endorsed the Republican presidential candidate. Education Insider, a monthly survey of congressional staff, federal officials and other “insiders,” said in May that Carson was Trump’s most likely pick.

Another possible education secretary under Trump is William Evers, a research fellow at the Hoover Institution who has worked on education matters for the Trump transition team. Evers worked at the Education Department during the Bush administration and served as a senior adviser to then-Education Secretary Margaret Spellings.

Veterans Affairs secretary

The name most commonly mentioned for Veterans Affairs secretary is House Veterans’ Affairs Chairman Jeff Miller, who’s retiring from the House and was an early Trump backer.

Homeland Security secretary

One person close to Trump’s campaign said David Clarke, the conservative sheriff of Milwaukee County, Wisconsin, is a possible candidate for Homeland Security secretary. Clarke has cultivated a devoted following on the right, and he spoke at the Republican National Convention in Ohio, declaring, "Blue lives matter." Christie is also seen as a possible DHS secretary.

Environmental Protection Agency administrator

While Trump has called for eliminating the EPA, he has more recently modified that position, saying in September that he’ll “refocus the EPA on its core mission of ensuring clean air, and clean, safe drinking water for all Americans.”

Myron Ebell, a climate skeptic who is running the EPA working group on Trump’s transition team, is seen as a top candidate to lead the agency. Ebell, an official at the Competitive Enterprise Institute, has come under fire from environmental groups for his stances on global warming. Venture capitalist Robert Grady is also a contender.

Other potential candidates: Joe Aiello, director of the New Jersey Department of Environmental Protection’s Division of Environmental Safety and Quality Assurance; Carol Comer, the commissioner of the Indiana Department of Environmental Management, who was appointed by Pence; and Leslie Rutledge, attorney general of Arkansas and a lead challenger of EPA regulations in the state.

Bryan Bender, Jeremy Herb, Connor O'Brien, Joanne Kenen, Marianne Levine, Michael Crowley, Doug Palmer, Nahal Toosi, Helena Bottemiller Evich, Zachary Warmbrodt, Ian Kullgren and Benjamin Wermund contributed to this report.