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.
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.
A good recommendation when choosing a pool is any pool not in the top 3 highest hashrate, but any other pool with at least around 0,5% of network hash rate so the pool will hit some blocks each day. Or if we want to help build up a tiny pool, go for an even smaller one.
The reason we want to not go for the pools with the highest hashrate is to spread the hash and secure our network. Read up on 51% attack here.
Choosing a pool close to our miners can improve pool hashrate.
List of pools for Ravencoin
HeroMiners RavenCoin Pool PPS+, SOLO
Available regions: "EU", "US", "ASIA"
BSOD.PW PROP24, SOLO, PARTY-PROP24
Available regions: "eu", "us", "ru", "asia"
MinerMore PPLNS, custom made pool. Operated by RVN community developer Traysi.
Available regions: "us", "eu", "ca", "texas", "hk"
Remember you need to make a user first and supply a password.
https://2miners.com/rvn-mining-pool PPLNS, SOLO
Available regions: "us", "asia", Europe is base region, no need to add anything extra. Additional port 6161 for NiceHash. 16060/16061 for SSL.
WoolyPooly.com PPLNS, SOLO
Additional port 55556 for SOLO mining. Base region is Europe.
https://ravenminer.com PPLNS, PPS
Available regions: "eu1", "eu2", "us-east1", "us-west1", "asia1", "jp1", "au1"
K1Pool.com PPLNS, SOLO
Available regions: "eu", "us", "cn". Additional port: 7862 (HiDiff)
This server will automatically route all your queries to our closest stratum server for optimal performance.