All the 20.04 flavours on one USB live with multisystem

The free multisystem USB has been updated and now supports installing all the new 20.04 releases.
Screenshot at 2020-04-29 19-01-44 Screenshot at 2020-04-29 19-02-27

follow the install from here
NOT the multiusb but the multisystem instructions further down.
Format your USB from disks or gparted as FAT32 with the label MULTISYSTEM and then again format from within the program before use to ensure boot on non UEFI (legacy) systems and UEFI systems.