How can you group custom post types in the admin sidebar?

If I understand what you are doing, and I may not, I would not do this with multiple Custom Post types, much less 27 of them.

I would…

  1. Create a single Custom Post Type for this “Latest News” data.
  2. Create a Custom Taxonomy to sort the data. This taxonomy would have
    27 terms to correspond to, and serve instead of, the CPTs that you
    are thinking about making.
  3. Create a theme template or templates to handle the data

To make this work, you would create a new post in your CPT and mark the appropriate term in your custom taxonomy. The template(s) you create in the theme would then display posts from the CPT according to a taxonomy argument– that is display posts based on the term chosen.

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