Does Google Takeout contain Android Backup for my devices?
From https://takeout.google.com, you can download files stored in My Drive and Computers, which don't include mobile Backups:



From the question: Downloading Phone's Backups from Google Drive to PC or Alternative Phone:


  You can not download the backup onto your PC. It can only be installed back onto the product it came from, or if it is an iOS or Android backup, then that can only go back onto that operating system (so back onto another phone or the same phone).


However you can "View details about a backup" and "Delete a backup" directly from a web browser or Google Drive app (source: Manage &amp; restore your mobile backups in Google Drive).