Three of the richest men in the world, foreign dignitaries, tech and business executives, former presidents and an assortment of performers and other celebrities are on the guest list for President-elect Donald J. Trump’s inauguration on Monday, even as much of the midday ceremony has been moved indoors amid forecasts of extreme cold.

It is unclear what impact, if any, the relocation of Mr. Trump’s second swearing-in ceremony into the Capitol Rotunda will have on the seating arrangements. Unlike the outdoor venue, the Capitol Rotunda only seats about 600 people.

Four years ago, Mr. Trump skipped President Biden’s inauguration in a snub to his political rival. Every living former president is set to witness his return to power, but some prominent Democrats are opting out.

Here’s the list of those who are planning to attend the inauguration, and notable no-shows.

Going

Billionaires, businessmen and tech executives

Elon Musk, Mark Zuckerberg and Jeff Bezos, three of the world’s wealthiest men, were reported to be among the major tech executives who would sit in a position of honor on the dais at Mr. Trump’s inauguration — before the event was moved indoors. Tim Cook, the chief executive of Apple, and Shou Chew, the chief executive of the imperiled social media app TikTok, had also been invited to sit on the dais.

Seating for other high-dollar donors from the business world was already highly competitive even before the last-minute move indoors. Some offered donations to Mr. Trump’s inaugural committee as high as $1 million without receiving any access to the inauguration or accompanying receptions in return.

World leaders

China’s vice president, Han Zheng, will attend the inauguration on behalf of Xi Jinping, whom Mr. Trump had invited to the inauguration.

Unlike at the inaugurations of President Biden and former President Barack Obama, a number of other world leaders will be in attendance. Many of them share Mr. Trump’s ideology and policy preferences.

From Latin America, Javier Milei, the right-wing populist president of Argentina, is reportedly planning to make an appearance. Jair Bolsonaro, the former president of Brazil and another right-wing populist, had intended to attend, but his passport was previously seized by federal police in Brazil and his request to a Brazilian Supreme Court justice to make the trip was denied.

From Europe, Giorgia Meloni, the right-wing prime minister of Italy, affirmed that she planned to attend. The press secretary of Viktor Orban, the prime minister of Hungary who has a friendly rapport with Mr. Trump, told a Hungarian media outlet that the prime minister had received an invitation but would not be attending.

Three representatives from key U.S. allies in the Asia-Pacific region will also be attending: S. Jaishankar, the external affairs minister for India; Penny Wong, the foreign minister of Australia; and Takeshi Iwaya, the foreign minister of Japan.

Trump’s presidential predecessors

Mr. Obama, George W. Bush and Bill Clinton will all attend Mr. Trump’s inauguration — as they did his first inauguration, eight years ago. They will not, however, attend a traditional lunch with the president-elect on that day, according to NBC News.

Former Vice President Mike Pence is also planning to attend the inauguration, according to two people with knowledge of the planning. He received an invitation, as is the custom for all former presidents and vice presidents.

Celebrity invitees

Carrie Underwood will sing “America the Beautiful” at Mr. Trump’s inauguration, according to a program of events. Victor Willis, the last surviving founding member of the Village People — whose music Mr. Trump frequently plays at this political rallies — announced on Facebook on Monday that the group had accepted an invitation to participate in Mr. Trump’s inaugural activities.

NBC News also reported that several athletes and musicians would be in attendance: They include Antonio Brown, the football player; Mike Tyson, the boxer; Jorge Masvidal, the martial arts fighter; and Evander Kane, the hockey player. The musicians Anuel AA, Justin Quiles, Rod Wave, Kodak Black and Fivio Foreign will also attend, NBC said.

Not Going

Michelle Obama

Mr. Obama is scheduled to attend, but Michelle Obama, the former first lady, will not. A statement from Mrs. Obama’s office did not specify a reason for the scheduled absence but noted that she had not attended another event this month: She did not accompany her husband to the funeral of former President Jimmy Carter, which every other living former president and first lady attended.

Nancy Pelosi

Representative Nancy Pelosi, the former speaker of the House and a chief antagonist of Mr. Trump during his first term in office, will also skip the inauguration. Ms. Pelosi, 84, is still recovering from a hip replacement after falling while on an official trip to Luxembourg, but she has been attending votes in the House. A spokesman would not specify why she would not attend, but there is long-running acrimony between Mr. Trump and Ms. Pelosi.

A number of House Democrats are also skipping the inauguration

Democratic members of Congress who have announced or told reporters of their plans to skip the inauguration include: Representative Adam Smith of Washington, Representative Judy Chu of California, Representative Delia Ramirez of Illinois, Representative Donald S. Beyer Jr. of Virginia, Representative Steve Cohen of Tennessee, Representative Jasmine Crockett of Texas, Representative Ilhan Omar of Minnesota and Representative Veronica Escobar of Texas.