Yeah dude, it's not even listing the entries for orphcrack!
Unetbootin is Very unreliable too bro.
I can make up a custom menu.c32 Menu system for booting any multidistro's.
does unetbootin menu appear as whiteish box?
Please post the isolinux.cfg's from each iso; gparted, and the orphcracks.
it's easy to turn them into a syslinux.cfg
also, unless your using windows, you should make the usb 1 ext3 partition with grub
and it'll run better.
if you need to swap files with linux, make a 2nd fat32 non-bootable partition.
I can also make a grub menu sytem with pictures or colored text too.
you should ditch Unetbootin though, it's like a broke volkswagon