Koudounaris is a Zimbabwean businessman and serial investor.
Nearly two weeks ago, Jooste was served two fines totaling $882,000.
Choppies Enterprises is a Gaborone-based supermarket chain.
Masiyiwa owns 52.85 percent of Econet Zimbabwe.
TymeBank is partly owned by Motsepe's African Rainbow Capital (ARC) Financial Services Holding.
Carry1st is a South African mobile gaming startup.
Saad owns a significant 12.5-percent stake in Aspen Pharmacare Holdings.
Oppenheimer has seen his net worth soar from $8.03 billion at the start of the year to $8.23 billion.
Calisto founded Karooooo in 2001.
The $1-2 billion increase cements his position as South Africa's richest billionaire.