Clean installs can be performed by installers which are very helpful in overwriting your start-up drive.This can take a lot of time and become inefficient if you have multiple Macs.
You will have to again download the installer on the latter Mac to install the macOS. Once the installer gets deleted, it means that you can no longer use it to install the macOS on another Mac device.
Why Do You Need to Create A Bootable Drive For Your Mac? How to Set the Computer Boot from the Bootable Media How to Create Bootable Media for Mac with Recoverit Mac Data Recovery
How to Create a Bootable Drive Using Terminal
