Conclusion

The fact that there are beings in Middle-Earth who cannot even be classified as members of a race or people is clear evidence for the existence of individuality and a very complex structure within the two sides of the "clash".

With my work, I am trying to prove that J.R.R. Tolkien’s universe is not – like many people think – a world devided into "Black" and "White" with a lack of individuals. I think the size of my paper should already be proof enough for this theses, considering that I do not even mention all of the different beings of Middle-Earth, which would be impossible without writing a book.
However, the descriptions of races as well as individuals I am giving should be enough to understand that Tolkien created a "clash betwen good and evil" on a very high level, with various beings who are not allying with either side, a variety of servants of evil and a good side nearly as complex as our own world.
In the end, the question whether the population of J.R.R. Tolkiens Middle-Earth is a universe or characters or clash between good and evil cannot be answered for it contains elements of both, but it is neither the one nor the other. Calling it a Black and White scheme containing all different shades of grey is probably as close as you can get.