Twitter Card
X/Twitter's own preview format, controlled by twitter: meta tags, layered on top of Open Graph.
Twitter Cards are the preview X renders for a shared link, configured with twitter: meta tags. X falls back to Open Graph tags for most fields, but twitter:card decides the layout — a big-image card or a compact one.
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:title" content="Your page title" />