Touch Bar MacBook Pro models have non-upgradeable SSDs, seemingly under-sized batteries - 9to5Mac
Replace your 2009-2012 MacBook Pro HD with an SSD
Amazon.com: Sintech M.2 NVMe SSD Adapter Card for Upgrade 2016 2017 13" MacBook PRO A1708 Non-Touch Bar Models(Only For Late 2016-Mid 2017 Year) : Electronics
MacBook Pro SSD Upgrade Guide (2021) - YouTube
15-Inch MacBook Pro With Touch Bar Has Non-Removable SSD - MacRumors
Macbook Pro SSD Upgrade In 2020 (Make Your Old Mac Run FAST) - 2012 Pro With Retina Display - YouTube
How-To: Upgrade the SSD in your MacBook Air or Retina MacBook Pro, boosting size & speed - 9to5Mac