Sorry, it's not quantity pricing that's a problem on the product categories list page. It's product variants.
I am not using overrides. Attached please find screenshots of the product categories list page
and the product details page.
While the four different prices for the different sizes are mentioned on the product categories list page, there is no explanation what the different prices are for. It would make far more sense for the customer, if there was an explanation what variants the four different prices are for.