How does one know whether they need the Debian-based Clonezilla Live, or the Ubuntu-based "alternative" Clonezilla Live?
This FAQ provides a high-level outline of the differences, but unless the system has an i386 processor or uEFI, it is unclear why users would need the Ubuntu-based "alternative" version.
Interestingly, the Clonezilla downloads page currently lists the "alternative" version first.