More than half the people outside the government who met with Hillary Clinton while she was US secretary of state gave money - either personally or through companies or groups - to the Clinton Foundation.
Donors who were granted time with Mrs Clinton included an internationally known economist who asked for her help as the Bangladesh government pressured him to resign from a non-profit bank he ran; a Wall Street executive who sought Mrs Clinton's help with a visa problem; and Estee Lauder executives who were listed as meeting with Mrs Clinton while her department worked with the firm's corporate charity to counter gender-based violence in South Africa.
They are among at least 85 of 154 people with private interests who either met or had phone conversations scheduled with Mrs Clinton and also gave to her family's charities, according to a review of State Department calendars released so far to The Associated Press.
Combined, the 85 donors contributed as much as 156 million US dollars. The 154 does not include US federal employees or foreign government representatives.
The AP's findings represent the first systematic effort to calculate the scope of the intersecting interests of Clinton Foundation donors and people who met personally with Mrs Clinton or spoke to her by phone about their needs.
The meetings between the Democratic presidential nominee and foundation donors do not appear to violate legal agreements Mrs Clinton and former president Bill Clinton signed before she joined the State Department in 2009.
But the frequency of the overlaps shows the intermingling of access and donations, and fuels perceptions that giving the foundation money was a price of admission for face time with Mrs Clinton. Her calendars and emails released as recently as this week describe scores of contacts she and her top aides had with foundation donors.
Mrs Clinton's campaign said the analysis was flawed because it did not include in its calculations meetings with foreign diplomats or US government officials, and the meetings examined covered only the first half of Mrs Clinton's tenure as secretary of state.
"It is outrageous to misrepresent Secretary Clinton's basis for meeting with these individuals," spokesman Brian Fallon said. He called it "a distorted portrayal of how often she crossed paths with individuals connected to charitable donations to the Clinton Foundation".
Donald Trump and other Republicans aren't letting the Clinton Foundation donor controversy slink away quietly. https://t.co/k47u9Ns9mQ— Twitter Moments (@TwitterMoments) August 24, 2016
Republican presidential nominee Donald Trump fiercely criticised the links between the Clinton Foundation and the State Department.
"It is impossible to figure out where the Clinton Foundation ends and the State Department begins," he said at a rally on Tuesday night in Austin, Texas. "It is now abundantly clear that the Clintons set up a business to profit from public office."
State Department officials have said they are not aware of any agency actions influenced by the Clinton Foundation. State Department spokesman Mark Toner said there are no prohibitions against agency contacts with "political campaigns, non-profits or foundations - including the Clinton Foundation".
He added that "meeting requests, recommendations and proposals come to the department through a variety of channels, both formal and informal."
Last week, the Clinton Foundation moved to head off ethics concerns about future donations by announcing changes planned if she is elected. Those planned changes would not affect more than 6,000 donors who have already provided the Clinton charity with more than 2 billion US dollars in funding since its creation in 2000.
"There's a lot of potential conflicts and a lot of potential problems," said Douglas White, an expert on non-profits at Columbia University. "The point is, she can't just walk away from these 6,000 donors."
Mr Fallon said earlier the standard set by the Clinton Foundation's ethics restrictions was "unprecedented, even if it may never satisfy some critics".
Muhammad Yunus, a Bangladeshi economist who won the 2006 Nobel Peace Prize for pioneering low-interest "microcredit" for poor business owners, met with Clinton three times and talked with her by phone during a period when Bangladeshi government authorities investigated his oversight of a non-profit bank and ultimately pressured him to resign from the bank's board.
Throughout the process, he pleaded for help in messages routed to Mrs Clinton, and she ordered aides to find ways to assist him.
Grameen America, the bank's non-profit US flagship, which Yunus chairs, has given between 100,000 dollars and 250,000 dollars to the foundation - a figure that bank spokeswoman Becky Asch said reflects the institution's annual fees to attend CGI meetings.
Another Grameen arm chaired by Yunus, Grameen Research, has donated between 25,000 dollars and 50,000 dollars.
In another case, Mrs Clinton was host at a September 2009 breakfast meeting at the New York Stock Exchange that listed Blackstone Group chairman Stephen Schwarzman as one of the attendees.
Mr Schwarzman's firm is a major Clinton Foundation donor, but he personally donates heavily to Republican candidates and causes.
The next day, according to Clinton emails, the State Department was working on a visa issue at Mr Schwarzman's request. In December that same year, Mr Schwarzman and his wife, Christine, sat at Mrs Clinton's table during the Kennedy Centre Honours.
Blackstone donated between 250,000 and 500,000 dollars to the Clinton Foundation. Eight Blackstone executives also gave between 375,000 dollars and 800,000 dollars to the foundation.
And Blackstone's charitable arm has pledged millions of dollars in commitments to three Clinton Global aid projects ranging from the US to the Mideast.
And in June 2011, Mrs Clinton met with Nancy Mahon of MAC AIDS, the charitable arm of MAC Cosmetics, which is owned by Estee Lauder. The meeting occurred before an announcement about a State Department partnership with MAC AIDS to raise money to finance AIDS education and prevention.
The MAC AIDS fund donated between 5 million dollars and 10 million dollars to the Clinton Foundation and several million more in commitments to programmes through the Clinton Global Initiative.