On a different note, it is CRAZY how huge the #1 miner is on Nanapool. 2000GH/s hashrate 
https://xmr.nanopool.org/account/4GdoN7NCTi8a5gZug7PrwZNKjvHFmKeV11L6pNJPgj5QNEHsN6eeX3DaAQFwZ1ufD4LYCZKArktt113W7QjWvQ7CWCVHbnzdvF8FG9G3RZ
Check this guy, he has 698 miners online and each miner giving about 3000h/s avg.
Assuming the person/entity is using 4-6 card mining rigs, then math say he has an empire of 5000-6000 cards running on monero
INSANE !!!!!!!!!!Oh and the top one probably would be either genesis or some other big mining whales
Just an assumption !