I wrote a zig implementation of binary fuse filters and some other filters in case anyone is interested.
https://github.com/steelcake/filterz
The repo also has a benchmark
Cuckoo filters with windows instead of buckets (https://scispace.com/pdf/3-5-way-cuckoo-hashing-for-the-pric...) would be a good addition. The xor_singleheader repo's chart is deceptive. Cuckoo filters are actually smaller once you get into low false positive rates, especially with the higher occupancy of windows.
I kind of gave up after trying ribbon filters. Couldn’t understand much from paper and the c++ code for it was really hard to understand for me too.
I was too lazy to implement the more advanced optimizations for it.
In comparison I could just implement binary fuse filters bu looking at the paper and it works good enough (it is really good)
I ported BinaryFuse filter to C#, along with tests and benchmarks. BinaryFuse filter is an incredibly clever data structure.