Admin Product Grid Category Filter Magento 2 Extension
https://www.cynoinfotech.com/product/product-grid-category-filter/
admin category filter For product grid Extension creates a new column in the Product grid that displays the category for each product. You can filter products by categories as well as update categories without leaving the product grid. Choose to unlink old categories during update. Admin category filter for product grid helps to find out which category the product belongs to. Category filter for product grid helps to filter products of specific category in Magento 2.