Update
As per new steps 1b and 1c, these are not required to be added as all Microsoft apps are applied automatically. Only Non-Microsoft apps need to be manually added.
Keeping information here for reference
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Some known App Bundle IDs
Azure Information Protection | com.microsoft.rms-sharing
Intune Company Portal | com.microsoft.CompanyPortal
Microsoft 365 Admin | com.microsoft.o365shdmobileapp
Microsoft Authenticator | com.microsoft.azureauthenticator
Microsoft Azure | com.microsoft.azure
Microsoft Bookings | com.microsoft.office365booker
Microsoft Defender for Endpoint | com.microsoft.scmx
Microsoft Edge | com.microsoft.msedge
Microsoft Excel | com.microsoft.Office.Excel
Microsoft Kaizala | com.microsoft.mobile.polymer
Microsoft Lens | com.microsoft.officelens
Microsoft Lists | com.microsoft.splists
Microsoft Office | com.microsoft.officemobile
Microsoft OneDrive | com.microsoft.skydrive
Microsoft OneNote | com.microsoft.onenote
Microsoft Outlook | com.microsoft.Office.Outlook
Microsoft Planner | com.microsoft.PlannerMobile
Microsoft Power BI | com.microsoft.powerbimobile
Microsoft PowerPoint | com.microsoft.Office.Powerpoint
Microsoft SharePoint | com.microsoft.sharepoint
Microsoft Stream | com.microsoft.stream
Microsoft Teams | com.microsoft.skype.teams
Microsoft To do | com.microsoft.to-do
Microsoft Tunnel | com.microsoft.tunnel
Microsoft Visio Viewer | com.microsoft.visio
Microsoft Whiteboard | com.microsoft.whiteboard
Microsoft Word | com.microsoft.Office.Word
Power Apps | com.microsoft.msapps
Power Automate | com.microsoft.procsimo
Remote Desktop Mobile | com.microsoft.rdc.ios
Skype for Busines | com.microsoft.lync2013.iphone