Needed to change scope on miniorange side to:
openid email profile
Then it provided the Gluu login prompt for existing gluu account. Once entered the username and password, it then prompted for permission for GLuu and Wordpress. Once authorized, it then autocreated subscriber account in the wordpress site as well (this is optional).
Many other steps to work out, but finally something actually worked. Still have to try to get Gumroad, Patreon, Discord, Mediawiki working with Gluu in SSO but at least that is one from the list.
WIll close this out now.