The correct solution depends upon your intent, in including metadata to your page. What exactly is it that you're hoping to gain? Exactly what is the win to suit your needs right here? The various varieties of metadata are for a little bit distinctive reasons. Google has produced it apparent https://www.presta-addons-modules.com/en/opencart-seo-automatic-google-rich-snippets-json-ld-integration-opengraph-twitter-tags-schemaorg.html