Merge Mining Pool also known as mmpool is a BTC mining pool that allows users to mine BTC for a 1.5% fee and to merge mine with Namecoin, Ixcoin, Devcoin, I0coin, Groupcoin, Unobtanium and Syscoin 2.0.
MoneroHash is a US mining pool created solely for Monero mining. Since 2014 it is run by a single person. The fee is 1.6 and a part of this amount is given to open source developers. The payouts occur every 24 hour (in case if the threshold is reached). There's an option to send the mined coins straight to the exchange wallet. It saves users some money that could be spent on transaction fees.
Suanlitou is a cloud mining platform that was founded in China in 2017. It provides two general services: buying hashrate to mine Bitcoin and selling hashrate.