Here are set up instructions for some other common OAuth providers. Third-party NuGet packages such as the ones maintained by aspnet-contrib can be used to complement authentication providers implemented by the ASP.NET Core team.
Set up Reddit sign in: https://www.reddit.com/login?dest=https%3A%2F%2Fwww.reddit.com%2Fprefs%2Fapps. See official steps.
Set up Github sign in: https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fsettings%2Fapplications%2Fnew. See official steps.
Set up Pinterest sign in: https://www.pinterest.com/login/?next=http%3A%2F%2Fdevsite%2Fapps%2F. See official steps.