categories, subcategories, products and variants

Hi
I need to create a complex structure:
- categories, linked in home page, as a simple list (ok, done)

- first level, in category page, with 2 images, title, description and pagenav, like here

- second level, with a list (in a table) with sku, attributes and prices, you've here an example

I've thinked that first level can be products, and second level variants. or first level page with elements, and second level products. do you have some suggestions about how can I do it?