GromBeestje

The OAuth plugin for WordPress allows you to provide authentication against any 
OAuth provider. This plugin is uses the OAuth library by Manuel Lemos. The 
plugin allows the admin to select any from the services supported 
out-of-the-box by the said library. Additionally it is possible to configure a 
service manually, which means any site supporting the OAuth protocol can 
be used.

BlaatLogin: OAuth

This plugin turns your WordPress website into an OAuth Consumer. It allowsallows your users to sign in with any OAuth provider.

Marco

This plugin allows users to authenticate to a site with an Azure AD account using OAuth.
This plugin requires an app registration in the Azure AD portal.
Warning: guest users and users created with a linked Microsoft account may lead to strange behavior. See the “How are AD users matched to site users?” FAQ for more information.
Not affiliated with or approved by Microsoft.

SSO for Azure AD

Enable Single Sign On with Azure AD on your site.

BlaatLogin: OAuth vs SSO for Azure AD