This is not a complete list of all the pools. It's a few of the pools that should get you started. For a more complete list check the ANN on Bitcointalk, or spend some time on the discord chat, both linked on the [[community]] page. There is also a list of pools maintained on the [https://gist.github.com/underdarkskies/0d38977702820c158a9c6458a8da0165 Underdarkskies GitHub] - correct as of 9th May 2018.
You can also find a list of Ravencoin pools on [https://miningpoolstats.stream/ravencoin Miningpoolstats.stream].
Small or Big pool does not matter, it will average out over time. Help the network by spreading the hash to a small or medium pool.