BBC World Service - Good Bad Billionaire

Jack Dorsey: Twitter squared

Jack Dorsey founded a social media behemoth, but made more cash from card payments

The story of Khaby Lame's billion-dollar shrug

Gautam Adani’s businesses span almost every part of life in India

Nelson Peltz made his money via some contentious methods, but fame came via his daughter

Prince Alwaleed bin Talal built his fortune betting against the crowd

As COO of Facebook, then Meta, Sheryl Sandberg is a rare billionaire employee

Lord Sugar built a fortune, conquered television, and became Britain’s best-known boss

How Brazilian brothers Wesley and Joesley Batista built the world’s largest meat empire

Tao Huabi went from childhood poverty in China to building a chilli oil empire

How Paul McCartney became the UK's first billionaire rock star