Adding Category to Single Post Shortcodes Dropdown

Hello,

I am modifying my theme to create a custom blog template, and I am using shortcodes to inject the post title and other details into the modified template.

My objective is to be able to add the category of the post underneath the post title using shortcodes. They do not have to be linked, just the text of the categories with the ability to add delimiters (“commas or vertical rules)

I’ve started to amend the post.php but I got stuck with actually updating the code to add the post tags, I’ve included some screenshots of the code that I’ve edited, to hopefully illustrate my objective better.

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