It says somewhere that 3 of
the Nine were
Black Numenoreans.
Khamul the 'Black
Easterling', said in UT to be the most able to sense
the Ring after the '
Witch King', but also
the one most confused by sunlight.
The only other possibly named is 'Gothmog, Lieutenant of Morgul', who takes command of the forces attacking
Minas Tirith after the 'Witch-king' is destroyed.
Purely speculative, but if 6 or 7 of the
Nazgul dwelt at that time in
Minas Morgul, wouldn't one of them most likely be 2nd in command & not some 'regular' mortal?
Although Gothmog could've been like 'The
Mouth of Sauron' too.....
BTW, on another thread (non-Tolkien), I offered a free CD package of a recent concert to anyone who could come up with 5 names for #1.
I mean '
titles', not like when the
orc says "I hear they've done in #1, & I hope it's true".
I found 7 so far.
Anyone wanna guess without looking it up in 'The Encyclopedia of
Arda' or some other referrence book?