The current leaders are on my smhasher site, https://github.com/rurban/smhasher/
I also appreciate this line in the README: "HighwayHash is not a general purpose cryptographic hash function (such as Blake2b, SHA-3 or SHA-2) and should not be used if strong collision resistance is required"
I am curious to know what the threshold for "strong collision resistance" is.
For hash tables you should not rely on the false security claims of these slow hashes anyway, rather implement proper collisions strategies to get rid of O(n) attacks.
And also we've done some predictions for collisions, see: https://github.com/fwessels/HashCompare/issues/1#issuecommen...