custom post types – How to create admin-page for CPT that works like the attributes page in woocommerce?

I’m working with a CPT that works more like a woocommerce attribute than a post, so I wanted to use a way to add items the same way you add a woocommerce attributes (or a taxonomy/category).

First I tried to use taxonomies, but I need some items with the same name (though they have diff. slugs and characteristics) and WP doesn’t let you add same name terms in same hierarchy.

Note: not a store website, that’s why I’m not working with wc.