Type of Investors in P2P agreements

There are 3 types of Investors in P2P agreements: 1) Everyday/Retail /Restricted Investor 2) Self-Certified Sophisticated Investor 3) High Net Worth

• Who are Everyday/Retail/Restricted investors? How much can they invest in peer to peer lending?
• What is a Self-Certified Sophisticated Investor
• High Net Worth Individual