Rather than using tools like YUMI and many others to create a multidistro boot usb stick, with Ventoy [ventoy.net] you can copy over .ISO files and boot from them on a multidistro USB!
With ventoy, you don't need to format the disk over and over, you just need to copy the ISO/WIM/IMG/VHD(x)/EFI files to the USB drive and boot them directly.
You can copy many files at a time and ventoy will give you a boot menu to select them (screenshot).
x86 Legacy BIOS, IA32 UEFI, x86_64 UEFI, ARM64 UEFI and MIPS64EL UEFI are supported in the same way.
Most type of OS supported (Windows/WinPE/Linux/Unix/VMware/Xen...)
Free and Open Source Software (FOSS)!
- Github page [github.com] for Ventoy