Wordsworth's Organization Skills

As far as Appendix E states, Wordsworth cared a lot more about the proper organization of his own books of poetry. After 1805, Wordsworth and Coleridge started separating their work into their own collections and organizing in different ways. It sounds like Coleridge didn't care as much as Wordsworth did about showing the audience the inner workings of his reasons for organizing in such a way. Coleridge may have organized much more than the table of contents showed, but he did seem to let the audience know. Wordsworth likes to spell everything out for his audience in a sense, as with what the preface was about, but I find this much better than the preface as a way of telling, in a sense, what each set of poems is about. I also noticed Wordsworth didn't include The Rime of the Ancient Mariner in his 1815 collection yet Coleridge did in his 1817 collection. What was the reasoning behind it? After the collaboration was over, did Coleridge make it more his own than Wordsworth, resulting in Wordsworth not caring to publish it? It isn't mentioned outside the context of Coleridge in this appendix. With such an important poem, it seems worthy of explanation, but there could an obvious reason I'm oblivious to.