I am also pondering storing the schema knowledge during the frontmatter but as this information is sort of elaborate and may fluctuate from post sort to publish kind (Report, HowTo and so on.) I am not sure if this is but a good suggestion? Contains settings to make and deal https://addons.prestashop.com/it/seo-indicizzazione-naturale/31857-google-rich-snippet-automatico-json-ld-open-graph-seo.html