Custom taxonomies in WordPress enhance content organization beyond default categories/tags, especially for custom post types. ACF® simplifies creating and linking taxonomies, allowing multiple types (e.g., Brand, Size) for a single post type. Custom fields enrich taxonomy data, enabling better filtering and organization. Common setup issues can be resolved with proper configuration. ACF provides a user-friendly interface for managing taxonomies, promoting efficient content structuring for diverse site types, from recipes to e-commerce.
https://www.advancedcustomfields.com/blog/add-taxonomy-to-custom-post-type/