Does anyone know if there is a dataset of Schema.org type usage across the internet. I know there is WebAlmanac, but I think they only pull 1-2 pages, so not likely to have the ful picture. I assume the folks at Google, Chrome, etc have looked at this?
schema.org
Schema.org - Schema.org
Schema.org is a set of extensible schemas that enables webmasters to embed
structured data on their web pages for use by search engines and other applications.