Open graph: List of global types
og:Type Lists Of Objects
apps.saves An action representing someone saving an app to try later.
article This object represents an article on a website. It is the preferred type for blog posts and news stories.
book This object type represents a book or publication. This is an appropriate type for ebooks, as well as traditional paperback or hardback books. Do not use this type to represent magazines
books.author This object type represents a single author of a book.
books.book This object type represents a book or publication. This is an appropriate type for ebooks, as well as traditional paperback or hardback books
books.genre This object type represents the genre of a book or publication.
books.quotes Returns no data as of April 4, 2018.
An action representing someone quoting from a book.
books.rates Returns no data as of April 4, 2018.
An action representing someone rating a book.
books.reads Returns no data as of April 4, 2018.
An action representing someone reading a book.
books.wants_to_read Returns no data as of April 4, 2018.
An action representing someone wanting to read a book.
business.business This object type represents a place of business that has a location, operating hours and contact information.
fitness.bikes Returns no data as of April 4, 2018.
An action representing someone cycling a course.
fitness.course This object type represents the user's activity contributing to a particular run, walk, or bike course.
fitness.runs Returns no data as of April 4, 2018.
An action representing someone running a course.
fitness.walks Returns no data as of April 4, 2018.
An action representing someone walking a course.
game.achievement This object type represents a specific achievement in a game. An app must be in the 'Games' category in App Dashboard to be able to use this object type. Every achievement has a game:points value associate with it. This is not related to the points the user has scored in the game, but is a way for the app to indicate the relative importance and scarcity of different achievements: * Each game gets a total of 1,000 points to distribute across its achievements * Each game gets a maximum of 1,000 achievements * Achievements which are scarcer and have higher point values will receive more distribution in Facebook's social channels. For example, achievements which have point values of less than 10 will get almost no distribution. Apps should aim for between 50-100 achievements consisting of a mix of 50 (difficult), 25 (medium), and 10 (easy) point value achievements Read more on how to use achievements in this guide.
games.achieves An action representing someone reaching a game achievement.
games.celebrate An action representing someone celebrating a victory in a game.
games.plays An action representing someone playing a game. Stories for this action will only appear in the activity log.
games.saves An action representing someone saving a game.
music.album This object type represents a music album; in other words, an ordered collection of songs from an artist or a collection of artists. An album can comprise multiple discs.
music.listens Returns no data as of April 4, 2018.
An action representing someone listening to a song, album, radio station, playlist or musician
music.playlist This object type represents a music playlist, an ordered collection of songs from a collection of artists.
music.playlists Returns no data as of April 4, 2018.
An action representing someone creating a playlist.
music.radio_station This object type represents a 'radio' station of a stream of audio. The audio properties should be used to identify the location of the stream itself.
music.song This object type represents a single song.
news.publishes An action representing someone publishing a news article.
news.reads Returns no data as of April 4, 2018.
An action representing someone reading a news article.
og.follows An action representing someone following a Facebook user
og.likes An action representing someone liking any object.
pages.saves An action representing someone saving a place.
place This object type represents a place - such as a venue, a business, a landmark, or any other location which can be identified by longitude and latitude.
product This object type represents a product. This includes both virtual and physical products, but it typically represents items that are available in an online store.
product.group This object type represents a group of product items.
product.item This object type represents a product item.
profile This object type represents a person. While appropriate for celebrities, artists, or musicians, this object type can be used for the profile of any individual. The fb:profile_id field associates the object with a Facebook user.
restaurant.menu This object type represents a restaurant's menu. A restaurant can have multiple menus, and each menu has multiple sections.
restaurant.menu_item This object type represents a single item on a restaurant's menu. Every item belongs within a menu section.
restaurant.menu_section This object type represents a section in a restaurant's menu. A section contains multiple menu items.
restaurant.restaurant This object type represents a restaurant at a specific location.
restaurant.visited An action representing someone visiting a restaurant.
restaurant.wants_to_visit An action representing someone wanting to visit a restaurant
sellers.rates An action representing a commerce seller has been given a rating.
video.episode This object type represents an episode of a TV show and contains references to the actors and other professionals involved in its production. An episode is defined by us as a full-length episode that is part of a series. This type must reference the series this it is part of.
video.movie This object type represents a movie, and contains references to the actors and other professionals involved in its production. A movie is defined by us as a full-length feature or short film. Do not use this type to represent movie trailers, movie clips, user-generated video content, etc.
video.other This object type represents a generic video, and contains references to the actors and other professionals involved in its production. For specific types of video content, use the video.movie or video.tv_show object types. This type is for any other type of video content not represented elsewhere (eg. trailers, music videos, clips, news segments etc.)
video.rates Returns no data as of April 4, 2018.
An action representing someone rating a movie, TV show, episode or another piece of video content.
video.tv_show This object type represents a TV show, and contains references to the actors and other professionals involved in its production. For individual episodes of a series, use the video.episode object type. A TV show is defined by us as a series or set of episodes that are produced under the same title (eg. a television or online series)
video.wants_to_watch Returns no data as of April 4, 2018.
An action representing someone wanting to watch video content.
video.watches Returns no data as of April 4, 2018.
An action representing someone watching video content.
Here’s the website of Open Graph Protocol: http://ogp.me/. Where ogp stands for Open Graph Protocol.
Explanation
On this website you can see all the OGP objects and it’s possible object types provided with an explanation of their purpose.
The list
On this website they are also talking about a global list of object types. And when a global object type is accepted by the community it is added to The Global List. What this suggests is that there is in fact a (apparently virtual) list of global object types! But the fact is you can create one yourself as well!
Here’s Facebook’s global list of object types: https://developers.facebook.com/docs/reference/opengraph/.
Also Schema (https://schema.org/) has a list of commonly used types. I would really recommend using Schema, since it’s used by Google to see how well you have documented your website (hence the name "Structured data"). Google also pulls out given tables, search bar, the website’s page structure, ratings/reviews, products and prizes and much more.
Example
Let's take a look at a random movie on the old imdb.com: "The Lord of the Rings: The Fellowship of the Ring (2001)". We see the tag used here:
<meta property='og:type' content="video.movie" />
Now if you would search the title online (let's use Google), we see the cast, duration, covers, genre, release year, box office. It's all collected by Google.
Nowadays, imdb uses image as their og:type. I'm sure why... maybe they want Google to fetch their data differently, or Google doesn't use the video.movie type anymore (I'll have to do some digging).
Another example. Let's search a random product on Etsy.com and throw it in the Google's Structured Data Testing Tool. We see that Google knows this is a product! Because they have the meta tag:
<meta property="og:type" content="product" />
Now this product will most likely be visible in Google Shopping as well!
Conclusion
I think you need to ask yourself why you would need this meta tag and it’s properties. I always put it in, but it always says website.
It’s cool you can create this list of global object types yourself, or use the types provided by your target (Facebook in your example). But is it really worth all this trouble? I created many websites without it and they preview their links beautifully on WhatsApp, Twitter and Facebook! Goodluck.
Read this answer for even more information about meta tags!