It's not unusual:
ubuntu20.04.2.0-desktop-amd64.iso
Device Boot Start End Sectors Size Id Type
/dev/sdg1 * 0 5619583 5619584 2.7G 0 Empty
/dev/sdg2 1700 9699 8000 3.9M ef EFI (FAT-12/16/32)
debian-10.8.0-amd64-DVD-1.iso
Device Boot Start End Sectors Size Id Type
/dev/sdg1 * 0 7750847 7750848 3.7G 0 Empty
/dev/sdg2 23764 29427 5664 2.8M ef EFI (FAT-12/16/32)