Terms archives index
A terms index links to categories, tags, or another public taxonomy’s terms. Choose a public post type and a public taxonomy registered for that post type. Only terms assigned to published, non-password-protected posts of that type are included; the count for a term reflects those matching posts.
Choose the layout and order
Basic arranges terms in one to six columns and can use fewer columns on smaller screens. Compact displays terms in a wrapping row, where the column setting does not control item widths.
Choose Order By to sort by post count, ID, name, or slug, and Order for ascending or descending results. For an alphabetical list, select Name and Ascending. You can also show or hide counts and adjust typography and colors.
This block preview uses a Products taxonomy, three columns, and descending post-count order:

Check the taxonomy
The taxonomy must be registered for the selected post type. If the index is empty, check the post type, taxonomy, and term assignments. See troubleshooting.