Hi @brandonv
Welcome to the Auth0 Community 
Great to have you on board.
I will run through an overview of my process implementing your use case, you can check against yours to see if you missed anything. On first glance your mapping prefix URL’s are all different and this is unexpected, usually they will all be consistent but let’s review.
The key thing on this is to take a look at what is in your SAML response. If you do a login against your SAML connection and have the browser dev tools open to see the network calls. There will be a POST against your ACS url configured on your IdP like the below:
As you can see the SAML response is within the payload. If you copy this into https://samltool.io/ you’ll be able to see the attributes in the SAML response clearly.
In my test you can see what my IdP is configured to send, I included an additional full name attribute for illustration purposes.
As you can see my IdP is sending the attributes without any prefixed url’s so I can map this to my Auth0 property as is within the connection:
Et voilà
The attributes have come across as expected:
I hope this helps you. Let us know if you need anything further.
Warm regards.