All latest images in posts from a category

[Johani (Joe)]

Actually, reading your post again, you might want to look at this theme component

Topic List Thumbnails Theme Component

This theme component allows you to show topic thumbnails in topic list views. Optimized images are generated for the lists, and different resolutions are made available for high-dpi displays. Images are lazy-loaded as you scroll (where native browser support is available). By default Discourse will use the first image in the OP of the topic. If you would like to select a different image from the OP, add |thumbnail to the markdown. For example  ![alttext|100x100…

Maybe that’s what you’re looking for?