Federal investigators traced a series of payments from Matt Gaetz, President-elect Donald J. Trump’s nominee for attorney general, to several women, some of whom testified that they were paid by Mr. Gaetz for sex, according to a document obtained by The New York Times and a lawyer representing some of the women.

The document, compiled during a three-year sex-trafficking investigation into Mr. Gaetz, includes a chart mapping thousands of dollars in Venmo transactions between Mr. Gaetz, his friends, associates, and women who participated in drug-fueled sex parties from 2017 to 2020, as detailed by testimony provided to federal and congressional investigators.

Witnesses reportedly testified that women, including a 17-year-old girl, were paid for sex at these events. The chart supports allegations made by a lawyer representing two women who claimed to have been paid by Mr. Gaetz for sex. It details significant Venmo payments made by Mr. Gaetz to both clients of the lawyer.

Mr. Gaetz, 42, served as a congressman from Florida between 2017 and last week. He has firmly denied the allegations, and the Justice Department ultimately closed its investigation without pressing charges. Nevertheless, his nomination has faced skepticism from Republican senators, some of whom question his confirmability. On Wednesday, Vice President-elect JD Vance accompanied Mr. Gaetz to Capitol Hill in a bid to rally support for his confirmation.

The chart, titled “VENMO TRANSACTIONS BETWEEN ALL INDIVIDUALS AS OF 09/14/20”, was obtained by the House Ethics Committee. It illustrates financial connections between Mr. Gaetz, multiple women, and several other men through thumbnail photos and transaction details. Arrows and amounts highlight the payment flow among the parties.

Although the Justice Department chose not to bring charges, the chart and other documents remain classified due to standard practices in investigations without criminal indictments. However, the House Ethics Committee acquired the chart during its own investigation into Mr. Gaetz, including allegations that he had sexual relations with the 17-year-old.

Steven Cheung, communications director for Mr. Trump, criticized the Justice Department for leaking what he described as “classified” materials, although the document bears no such markings and is unrelated to national security. “This politically motivated leak is an example of the weaponization of the Justice Department that Matt Gaetz is determined to reform,” Cheung stated.

The chart does not explicitly state the purpose of the payments or show any direct transactions between Mr. Gaetz and the 17-year-old. However, it details payments allegedly made to other women, including the two represented by attorney Joel Leppard. Leppard confirmed that his clients testified before the House committee, asserting that Mr. Gaetz paid them for sex. According to Leppard, one client received $4,025.27 and the other $3,500, though these amounts represent aggregated payments made over multiple encounters. The women were typically paid between $200 and $500 per encounter.

Leppard further disclosed that his clients had also received payments via PayPal. He claimed that additional evidence provided to the House committee showed total payments of approximately $6,000 to one client and $4,000 to the other. He believes this information was obtained through subpoenas sent to Venmo and PayPal.

The chart also corroborates the testimony of Joel Greenberg, a former Florida tax collector and a key witness in the federal investigation. Greenberg pleaded guilty to sex trafficking and other charges in 2021 and cooperated with authorities, alleging that he and Mr. Gaetz had sexual relations with the 17-year-old, albeit under the assumption that she was over 18. Greenberg was sentenced to 11 years in prison. The chart reveals that Greenberg paid the 17-year-old $450.

Despite repeated refusals from the Justice Department to hand over evidence from its investigation, the House Ethics Committee managed to access some materials, further intensifying pressure to release a report on its findings. However, the committee has remained deadlocked on whether to do so.