Report-usually facts and verifiable information; technical in nature
Descriptive-describing someone; something
Explanatory-explaining something by example; anecdote
Exposition-uses the above to; exposes something to the reader
News Item-Uses who, what, when, where, why -Objective POV; uses 3rd person pronouns; top down structure (all pertinent info introduced within the first paragraph
Oratory, analytical, and discussion-not sure exactly what you mean.
Everything always fits into a basic 5 paragraph structure: Introduction; Para 1, 2, 3 and Summary/Conclusion-Introduction tells the reader what the paper will be about, main idea is here; body is 3 paragraphs giving information; and summary/conclusion retells what the paper is about, or a call to action.
Not sure if this is what you're asking.