Gagan Deep Singh

Notice: Currently works only with WordPress Classic Editor, not Gutenberg compatible
Allows you to choose primary category for posts and custom post types.
When the permalink structure includes category, the category marked as Primary, will be used for generating the permalink of the post.
Works with custom post types and custom taxonomies as long as the taxonomy supports hierarchical structure.

Easy Primary Category

Allows you to choose primary category for posts and custom post types.

airesvsg

Select the primary category
See details on GitHub: <a href="https://github.com/airesvsg/wp-primary-category/" rel="nofollow ugc">https://github.com/airesvsg/wp-primary-category/</a>

Easy Primary Category vs WordPress Primary Category