How do I properly setup mappers for Azure AD?

I have our system up and running and can successfully authenticate with Azure. However, I cannot seem to configure the mappers correctly. I’ve tried mapping firstName, lastName, and email, but none of them work.

What I am trying to avoid is a first time user being prompted to input their email, first and last names as soon as they successfully authenticate with Azure.

Here’s what a new user would see (I also need to figure out how to disable or hide the username field):

Here’s one of the mappers for first name:

I have not been able to find any examples of how this can be setup anywhere, so if anyone can get help get going in the right direction I would appreciate it.