Before Catalina, each macOS update wrote a full transcript of all it installed to a BoM file, which you can inspect. That stopped, without any substitute.
lsbom
Introducing a new version of SystHist which lets you see everything that Apple, the App Store, and silent updates install, for El Capitan, Sierra, and High Sierra.
Here’s how to find out just what that last update installed, so you can remove it manually if necessary.
The Eclectic Light Company 