Group your collection together by subgenre?

[TheWalkingDead]

Not sure what forum to post this in. Any online tools to import my collection from this site and it will separate them by movie subgenre or plots?

I'm reducing space of our collection and putting it all in 6 disc bluray cases. Im having trouble deciding how to separate and put together the drama and thriller movies, it seems the subgenres vary greatly (to me at least). I do have them separated similar to my collection on this site but still seems like it is impossible to separate them to put 6 similar movies by movie plot or subgenre together in a reasonable amount of time.

Alphabetically would be easiest but I like how I separated a few others years ago. For example I have these in 4 disc cases.
faster, the rundown, snitch, walking tall
immortals, centurion, prince of persia, scorpion king
green zone, hurt locker, the kingdom, traitor