How do I include blog posts from different blogs into one blog

Topic summary

A user is managing a Shopify blog structure with one main “News” blog and six subcategory blogs (gut-health, weight-management, plant-protein, blood-sugar-management, wellness, allergen-friendly).

Current Setup:

  • The main News blog successfully displays all posts from all categories
  • Older posts exist under the News blog URL structure (e.g., blogs/news/7-ways-to-improve-gut-health)

Problem:
The user wants these News-categorized posts to also appear in relevant subcategory blogs without changing their original URLs. For example, a post at blogs/news/7-ways-to-improve-gut-health should display both on the News blog and the gut-health subcategory blog.

Attempted Solution:
They want to add code to their category blog template that would manually include specific blog post URLs when viewing a particular subcategory (e.g., if viewing gut-health blog, display certain manually-added News posts).

The user has spent several hours troubleshooting this with ChatGPT but hasn’t found a working solution yet.

Summarized with AI on November 8. AI used: claude-sonnet-4-5-20250929.

So, I’ve been banging my head against the wall with this for a couple of hours now, using ChatGPT and any help I could find.

Here’s my situation:

There is one main blog called “News”
There are 6 sub categories of the blog which can be accessed through the News blog
blogs/gut-health
blogs/weight-management
blogs/plant-protein
blogs/blood-sugar-management
blogs/wellness
blogs/allergen-friendly

Now, on my news blog I have made it so that ALL blog posts from all categories are displayed.

Now, I have some older blog posts that are uploaded to the news channel, but I want to include them in specific categories I find them relevant for.

For example:
blogs/news/7-ways-to-improve-gut-health

It is on the news channel, and I also want it to be on the gut-health blog, and I do not want to change the URL.
I want to add a code to my CATEGORY Blog template (a template specific to subcategory blogs, and not the main one)

In that code, there would be a functionality like this:

  • if the blog is “gut-health”, then display following blog posts (manually added blog post URLs)

How do I do this?