Reply To: Subcategory as a custom filter

Hello,

I saw the screenshot you attached.

There is no widget available to show only the subcategories. You can try using the Product Categories widget in the Shop page widget area under Appearance >> Widgets.

Screenshot for Clarification: https://gyazo.com/0052756b152db64bcfa78ab0fafd2074

And see if this fulfills your requirements.

Best Regards