What other proof methods are there? I am familiar with the proof of work method and a little with the proof of stake method. Is there any more methods that are out there and how do they work?
A few others on top of my head, in addition to variations of PoS (DPoS, LPoS, etc)


Proof of Importance (PoI): kinda like PoS, but stake here is the total transaction amount (greater than some vested amount of coin)
Proof of Authority (PoA): transactions are validated by selected validators
Proof of Burn (PoB): please refer to this SE question: How does Proof of Burn work?