PRODUCT GRID CATEGORY FILTER
The extension allows adding category columns in the product grid to expand the Magento 2 admin. Using this extension, filter products for a particular category in the product grid from the backend. Product Grid Category Filter enhances the default Magneto 2 product grid. The store admin can filter products by category name and category ID. The benefit of this extension is to save the time of the store admin.  Easily find the product of a particular category with this extension.
https://www.cynoinfotech.com/product/product-grid-category-filter/