The Securities and Exchange Commission (SEC) upgraded the EDGAR System to Release 23.4 which now supports the Fund (FND) Taxonomy to be used for tagging elements related to the final rule on Investment Company Names. The SEC announcement pointed out that “… this version does not include an fnd-entire entry point due to technical issues while importing other 2023 taxonomy files. The 2024 version to be released in the next EDGAR update will include an fnd-entire entry point.”
Here is the Taxonomy Guide.
Here is the list of supported standard taxonomies.