"mount -t TYPE /" - how to know that what could the "TYPE" be?
This should work for ubuntu as well as Debian, type the following:
cat /proc/filesystems
This will output what your current kernel supports
ah now i understand your question better, type:
man mount
and scroll down to -t and there will be a list of supported filesystems that mount it self supports, but this is dependent on what your kernal supports