You are missing coinbet24, they offer both anonymous registration only with Bitcoin and they ask you for KYC/AML when you want to play in FIAT currencies with them.
It won't be added to the list because their rank is not near to the top 20. The 20th sportsbook (betbtc) on their list has a global rank of 819,913 while coinbet24 is at 1,883,316. I want to point out that fairlay should be included there they have a global rank of 294,219.