Since the pinecone metadata filters are based on MongoDB query/projection operators (ref: pinecone docs) it is assumed that there should be full support for all operators that exist in the mongo documentation.
The pinecone documentation only shows a few examples of operators that are currently supported. If the eventual goal is to provide full support for all existing mongo operators, It would be awesome if the docs would should show an exhaustive list of all currently supported operators. ie a table with rows for each operator, and a supported column with either a check mark or a date of when this plans to become supported.
I have seen many other feature requests about whether or not operators will be supported, are currently supported, etc., and I think it would be massively helpful to many others in the Pinecone community to have this information available.