Its the weekend and I have grant proposals to write, but need a distraction. So here's a crypto meme crudely edited to accurately summarizes the state of privacy techniques on blockchains.

There probably a few other Zerocash derived schemes that are live besides the ones I listed, thats just what I got off the top of my head for projects who I've actually met and have constructions that , if implemented correctly, give full privacy.

Oh, Railgun on Eth probably falls into this category (if your careful about gas).