This members-only tutorial provides the steps to register a custom block for WP Grid Builder that outputs comma-separated links for categories of each post in the grid in a custom format.
Regular:
example.com/category/recipes/30-min-meals/Custom:
example.com/recipes/?_filter_recipes=30-min-meals/
Step 1
Add the following snippet using a code snippets like WPCodeBox and set it load on frontend.
Title: Custom Category Links
Code: