Ventoy is the ultimate multi-boot USB drive creation tool, in my opinion. I also use PINN, a similar tool for my Raspberry Pi OS installs, but that's for installing multiple OS on the same disk drive.

If you want to keep Widgets enabled but clean it up a bit, open the Widgets menu, click the Settings gear in the top-right ...

If you manually partition your Linux PC, you're setting up all the necessary partitions for your system and allocating disk ...