@nuxt/content and @nuxtjs/sitemap with the following configdocumentDriven: true is necessaryWhen using documentDriven mode, all paths will be automatically added to the sitemap.
If you want to add markdown pages to your sitemap without any extra config, you can use the sitemap key on your frontmatter. You must provide a loc value, or the page must have a path.
loc: /leadership in the markdown frontmatter?