I liked this thread until the last two pages.
What about Bytecoin? Does it not meet the requirements of most "known" anonymous coins?
Went dead for a year, but extremely active development in 2015 and extremely impressive feature list.
Second-highest market cap of Any anonymous coin (other than Dash).
Doesn't count as anonymous because 80%+ of the utxoset is owned by entities who mined them before it became public and global, which means that those entities can deanonymise pretty much all future transactions.
Marketcap is irrelevant as it's easily inflated (doubly so when all you have to do is slightly bump the price due to the massive amount that's already emitted).