A mining pool consists of a group of like-minded miners who bring resources together and share the rewards received according to the hash power contributed to the network. The presence of a mining pool is ideal for a neutral and average miner as it makes the process easy. Though miners can direct their hash power elsewhere at a distinct mining pool, members of a mining pool focus more energy on the original owner of the pool.
China is considered to have the majority of mining pools compared to other countries like Iceland, Japan, and the Czech Republic currently controlling 81% of the hash rate available in the network.
The following are the most brilliant mining pools:
https://www.tokens24.com/cryptopedia/mining/the-best-mining-pools-for-2018