F2pool is a Chinese multicurrency mining pool founded in 2013. Now it has servers located in the USA, Canada, Russia, Singapore, and several other countries. The pool has a big number of supported coins. Currently, it is possible to mine around 40 currencies on F2pool.
Luxor Mining is a cryptocurrency mining pool that allows users to mine the popular SC cryptocurrency used in the Sia decentralized storage network, LBRY and also Decred (DCR). The Sia mining pool offers a 0% mining fee (PPLNS) and on the other hand, 0.3% is charged on the DCR and LBRY mining pool (PPS).
Support XMR is a large mining pool designed for a single purpose which is Monero mining. The fee is quite low (0.6 ). The minimum payout is 0.1 XMR. Such an amount can be demanding for some people although it's quite a standard amount. The rewards are accruing every 2 hours. It is fair to say that Support XMR is popular among its users and the feedback is mostly positive.