The two most common Ponzi scheme that I have seen is investment based pyramid scheme and MLM based cryptocurrency scheme. Both these will offer higher returns on amount invested.
Those are pyramid schemes, and not ponzi schemes.
Ponzi schemes and pyramid schemes are different, though they are similar in that current victims benefit from newer victims.
A ponzi scheme is an investment fraud in which the operator claims to invest the victims' money, but keeps it instead. The operator generally uses some of the investment money to convince victims that the investment is making a profit. Many ponzi schemes also incorporate a pyramid scheme by paying for referrals.
In a pyramid scheme, a victim generally pays current members of the pyramid scheme to join the pyramid scheme, and then makes money by convincing others to pay him to join. There are variations, or course. For example, often a victim doesn't buy membership outright, but instead pays for some product in order to join and then sells products to new victims who buy in order to join.