Possible Clues:

• Rapper who co-founded Roc-a-Fella Records
• Rapper with the line "I'm not a businessman, I'm a business, man"
• Co-headliner of 2014's 'On the Run' concert tour
• Retired rapper from Bed-Stuy
• Artist who contributes to each of the starred entries, in a way
• Rapper who is part owner of the New Jersey Nets
• 'The Black Album' rapper
• Guest MC on Rihanna's 'Umbrella'
• Hip-hop mogul, and a hint to this puzzle's theme
• Rap star who co-owns the New Jersey Nets