A "pairs well with" rail of the exact product card on your shadcn Carousel, with the Carousel's own previous / next buttons in the header and a progress rule under it in place of a scrollbar. Below the fold by nature, so nothing in it loads with the page: the cards and their images mount when the rail comes within a screen of the viewport, fading in over skeletons of exactly their shape (Motion). Compound, through useRelatedProducts().
npx shadcn@latest add @ecomcn/related-productsrelated-products