Our detectives are back with the following intel on this WordPress site
The site is using the Twenty Sixteen theme by the WordPress team .
We could identify 3 plugins (there might be more) - Better WordPress Google XML Sitemaps (support Sitemap Index, Multi-site and Google News) , Yoast SEO and WP Fastest Cache
Twenty Sixteen is a modernized take on an ever-popular WordPress layout — the horizontal masthead with an optional right sidebar that works perfectly for blogs and websites. It has custom color options with beautiful default color schemes, a harmonious fluid grid using a mobile-first approach, and impeccable polish in every detail. Twenty Sixteen will make your WordPress look beautiful everywhere.
A WordPress XML Sitemap plugin that comes with support for Sitemap Index, Multi-site and Google News sitemap. Image sitemap is supported, too.