Hey rust...Sorry it took a while to answer this. Since you are already in the Poetry Section...I guess you are referring to the specific categories of a poem that Hub Pages let's you define for distinction. (Doing this by memeory) I have researched each category myself. Let's see if I get it right. Really, I'm sticking to the simple expalnation for this:
Drama: for a dramatic presentation poem that expresses feelings.
Satirical: for those with a comical twist about someone or something.
Lyrical: My definition: Are Poems that a good musician could easily convert over to the words of a song...with out changing the lines up any.
Nonsense: Speaks for itself: See "Jabberwocky"
Epic Poems: By "Wiki-(Tiki)-pedia" definition...closest definition to what I like:is a lengthy narrative poem, ordinarily concerning a serious subject containing details of heroic deeds and events significant to a culture or nation. I like to use this for all War Poems and related-type Poems. (Your "Confederate Son" and Civil War Poems may fall under this.)
Prose: In my book...is any great poem that doesn't rhyme...each line.
Narrative Poetry: According to definition: is one that has a plot. But, that is asking a lot for all poems...so I just go with one that has a pretty good story or tale. Which is probably the same definition...but too complicated for this 'ol poetry man.
Ballad: Can't remember if this is a feature category on Hub Page: Poetry Section...Wait..."Ode" is though. Here's the definition's of each:
Ballad:Ballad Poems are poems that tell a story similar to a folk tale or legend and often have a repeated refrain. Well, that might go under Narrative...if not for the repeated refrain part. Recommend your best judgement call...as ballads seem to be more of a tale that could be handed down through time. Basic explanation on my part...as best I can describe!
An "Ode": An Ode is a poem that is written for an occasion or on a particular subject. They are usually dignified and more serious as a form than other forms of poetry.
Well, that is the only categories I can think of at the moment...and the definitions I use. Hope that helps!.