- Net worth: $3.5 billion (#818 richest worldwide)
- Source of wealth: Eyeglasses
- Country of residence: Italy
- Age: 33

Rocco Basilico inherited a stake in the late Leonardo Del Vecchio's holding company, which includes control of Luxottica, the largest eyewear company in the world. Basilico is Del Vecchio's stepson, who has held senior positions since at least 2016 in various brand departments at the firm, including Ray-Ban.

- Net worth: $3.5 billion (#818 richest worldwide)
- Source of wealth: Eyeglasses
- Country of residence: Italy
- Age: Various

Members of the Del Vecchio family are heirs to the enormous wealth generated by Luxottica. Leonardo Del Vecchio founded and led the company until his death in 2022. Now called EssilorLuxottica, the firm includes eyeglass brands Ray-Ban, Oliver Peoples, and Oakley. It is also licensed to distribute almost every major designer's frames, including Chanel, Prada, and Versace.

- Net worth: $3.5 billion (#818 richest worldwide)
- Source of wealth: Skincare
- Country of residence: China
- Age: 57

When skincare products supplier Giant Biogene went public on the Hong Kong Stock Exchange in 2022, it propelled 56-year-old co-founder Fan Daidi to billionaire status. She has worked in academic research and is invested in aerospace and defense companies.

- Net worth: $3.5 billion (#818 richest worldwide)
- Source of wealth: Eyeglasses
- Country of residence: Italy
- Age: 65

Nicoletta Zampillo, widow of Leonardo Del Vecchio, derives her riches from the equity she owns in the largest eyeglass firm in the world, EssilorLuxottica. Del Vecchio was the firm's chairman, and when he passed, Zampillo inherited a 12% stake in the family holding company.

- Net worth: $3.6 billion (#787 richest worldwide)
- Source of wealth: Auto parts, distribution
- Country of residence: Belgium
- Age: 48

Nicolas D'Ieteren is chairman of the eponymous D'Ieteren group, which mainly sells automobiles, including those made by Volkswagen and Lamborghini. He is a sixth-generation descendant of the 200-year-old conglomerate's founder.

- Net worth: $3.7 billion (#766 richest worldwide)
- Source of wealth: Fintech
- Country of residence: United States
- Age: 51

Hayes Barnard founded GoodLeap, a tech platform that allows its business clients to provide on-the-spot loans and repayment plans to customers purchasing things like solar panels for their homes. Barnard has worked in senior positions at Oracle and another firm acquired by Tesla.

- Net worth: $3.8 billion (#748 richest worldwide)
- Source of wealth: Health care
- Country of residence: China
- Age: 54

Su Qingcan owns a Southeast Asian health care firm focused on eye and vision care. He came into his current wealth when the company went public in 2022.

- Net worth: $3.8 billion (#748 richest worldwide)
- Source of wealth: Packaging materials
- Country of residence: United States
- Age: 77 (both)

In 2018, Elizabeth and Dick Uihlein were dubbed the most powerful conservative couple "you've never heard of" by the New York Times. The two made their riches with the Uline packing materials company, which sells cardboard moving boxes and other shipping materials.

- Net worth: $3.9 billion (#721 richest worldwide)
- Source of wealth: Diversified
- Country of residence: Thailand
- Age: Not available

Somurai Jaruphnit is the granddaughter of a seed salesman that turned his business into an agricultural empire. Her stake in the family business is a little over 8%, according to Forbes.

- Net worth: $4 billion (#699 richest worldwide)
- Source of wealth: Subway
- Country of residence: United States
- Age: 75

Elisabeth DeLuca and her family are the heirs to Subway cofounder Fred DeLuca's fast-food fortune. Subway has been at odds with franchisees and was rumored to be exploring a sale in recent years; Elisabeth is believed to own half of the company.

- Net worth: $4.2 billion (#659 richest worldwide)
- Source of wealth: Coal
- Country of residence: Indonesia
- Age: 72

Dewi Kam's wealth blossomed in 2022 during the global energy crisis stemming from the Russian invasion of Ukraine, according to Forbes. Kam's fortune comes from investments in coal, power plants, and energy infrastructure construction.

- Net worth: $4.6 billion (#591 richest worldwide)
- Source of wealth: Health care
- Country of residence: China
- Age: 66

Wuhan resident Xue Min controls one of the largest health care technology firms in Asia with his investments. The company, Shanghai United Imaging, makes radiation and medical imaging technology. It has a U.S. headquarters in Houston.

- Net worth: $5 billion (#534 richest worldwide)
- Source of wealth: Trading
- Country of residence: United Kingdom
- Age: 43

Russian-born Alexander Gerko founded an algorithmic stock trading company in 2015. Gerko previously worked in senior positions overseeing foreign exchange trading for Deutsche Bank and GSA Capital.

- Net worth: $5.1 billion (#523 richest worldwide)
- Source of wealth: Investments
- Country of residence: India
- Age: 59

Rekha Jhunjhunwala inherited her fortune from her husband, an investor sometimes referred to as "India's Warren Buffett," per the Financial Express. Jhunjhunwala has continued investing, doubling down on some of the investments made by her late husband, according to India Times.

- Net worth: $5.2 billion (#511 richest worldwide)
- Source of wealth: Real estate management
- Country of residence: United States
- Age: 59

Greystar Real Estate Partners CEO Bob Faith worked under real estate tycoon Trammell Crow when he was younger before building his own property companies. Faith has said the secret to his success was building companies with diversified revenue streams capable of weathering downturns.

- Net worth: $5.6 billion (#455 richest worldwide)
- Source of wealth: Shipping
- Country of residence: Greece
- Age: 41

Maria Angelicoussis is CEO and owner of the namesake shipping company started by her grandfather. She took over the company and its 140-plus ships when her own father, John Angelicoussis, died in 2021.

- Net worth: $6.5 billion (#390 richest worldwide)
- Source of wealth: Real estate
- Country of residence: United States
- Age: 93

Annette Lerner and her husband, Ted Lerner, began investing in real estate in the 1950s and have turned it into a billion-dollar enterprise. Ted died in February 2023, leaving Annette to inherit the firm. Their company Lerner Enterprises owns a significant amount of Washington D.C. real estate, which is among the priciest regions for housing in the country.

- Net worth: $7 billion (#332 richest worldwide)
- Source of wealth: Diversified
- Country of residence: India
- Age: 55

Rohiqa Cyrus Mistry, the daughter of one of the country's most prominent lawyers, is the widow of Cyrus Mistry. Cyrus was an heir to the founder of a 158-year-old Indian construction firm who died in a car accident in September 2022. Cyrus' elder brother now owns the firm Shapoorji Pallonji Group. Today, Rohiqa is one of the richest women in India.

- Net worth: $7 billion (#332 richest worldwide)
- Source of wealth: Diversified
- Country of residence: Ireland
- Age: 58

The Times of India had dubbed prolific construction executive Pallonji Shapoorji Mistry the "Man Who Built Half of Mumbai." When he passed away in the summer of 2022, he gave control of the urban infrastructure-focused company to his son, Shapoor Mistry. As chairman, Shapoor has reportedly entertained selling a controlling stake in the family business.

- Net worth: $7.2 billion (#317 richest worldwide)
- Source of wealth: Trading, investments
- Country of residence: United States
- Age: 65

Arthur Dantchik is cofounder and director of the successful Susquehanna International Group, a Wall Street investment firm. The Asia-Pacific arm of the investment group Dantchik founded with a bunch of his friends in the 1980s was an early investor in TikTok parent company ByteDance. Dantchik is also a prolific donor to Republican and libertarian organizations.

- Net worth: $9.6 billion (#195 richest worldwide)
- Source of wealth: Warehouse automation
- Country of residence: United States
- Age: 70

Rick Cohen owns and oversees a grocery wholesale business that brings in $25 billion annually. The New Hampshire-based grocer has found itself among the top 10 most valuable privately held companies in the U.S. in recent years, according to Forbes.

- Net worth: $34.7 billion (#37 richest worldwide)
- Source of wealth: Red Bull
- Country of residence: Austria
- Age: 30

Heir of Red Bull co-founder Dietrich Mateschitz's energy drink company, Mark Mateschitz became the wealthiest millennial in Europe when he inherited a 49% stake in the company from his late father. As an only child, Mark was given senior positions at Red Bull to prepare him for the control bequeathed to him when his father died in 2022.

Data reporting by Paxtyn Merten. Story editing by Jeff Inglis. Copy editing by Paris Close. Photo selection by Abigail Renaud.