What is the difference between MasterChef, MasterChefv2 and MiniChef?

There are three different types of implementations for Masterchef

MasterChefv1: The main contract on the Ethereum network that rewards $SUSHI to users for staking their LP and/or KMP tokens.
MasterChefv2: Secondary contract on the Ethereum network. It is built on top of MasterChefv1 and gives 2 different type of tokens as a reward. e.g Users will receive SUSHI & another token as their staking reward.
MiniChef: This contract is mainly deployed on various EVM compatible chains (AVAX, FTM, CELO etc.). It is similar to MasterChefv2, in which it also gives 2 different type of tokens as a reward.