Hello, @mariita52. You deal with several aspects that, obviously, I won't be able to answer properly in this answer. I will address the main ones.
I don't know if you read in Spanish (there are very good translations of Rimbaud's work in our language, like those of Raúl Gustavo Aguirre, made by Monte Ávila, a Venezuelan publisher).
The best representation of the contributions of Rimbaud's poetic work is in A Season in Hell+ and in Illuminations, although already in "The Drunk Ship" there is an interesting note, but still under the aegis of the final rhyme, which will disappear completely later.
Although we know that poetry, like any artistic work, is linked to the concrete life of each author, a relationship of equality between poetic speaker and real person cannot be established. That's what Rimbaud was against.
Thank you for your comment.