Good day Microsoft Community
Background
We have about 60 Azure users who are currently Managed through Microsoft 365. We want to convert these users to Federated users in order to provide a SSO experience and ease of management. However, our Identity Provider and email are hosted through G Suite and migrating to O365 email is not an option.
Goal
Create Federation between these two providers so that end users can activate their Microsoft 365 business apps via SSO using their G Suite credentials.
We've found several articles on the web including this one, which almost fits our bill, except that we cannot Federate our O365 domain because we don't have an Active Directory Federation Services 2.0 server onsite. 
Note: I've redacted our domain name on the PowerShell output for privacy purposes.
Has anyone attempted to use G Suite as an Identity Provider for Azure SSO before? Any experience or insight is highly appreciated.
Thank you for your time.