Using Configuration Manager 1806 Hotfix Rollup (KB4462978), I was able to follow steps 1 - 18 and the task sequence completed successful.
During OOBE I was prompted for Windows 10 License Agreement and Sign in with Microsoft work or school and not Welcome to My Company! as the manually added devices do. Oddly, if I place my work credentials in the Sign in With Microsoft, it does proceed and Azure AD Join the device and Intune does see the ownership as Corporate. Sadly I do not get any assignments as I do when I manually.
Manual process is:
-Manually running the PoSh to obtain the exported csv
-Importing the csv to MS Store for Business and assign the AutoPilot Profile
I was hoping this process can be automated. Am I missing a step in this automation or any log files I can review?