[hexxagone]

You mean like zstd and brotli ? Is there any new LZ codec not using Huffman ?

[retrac]

It was my understanding Zstd used neither Huffman or AC but something else: https://en.wikipedia.org/wiki/Asymmetric_numeral_systems

Edit: It uses a variety of entropy encodings for different data structures, Huffman is one of them. My apologies for the confusing initial comment.