The top shows a path that does not include publication of the article on a preprint server. The second one with the orange squares shows preprints and feedback on the preprints as part of the path leading to publication in a peer-reviewed journal. The third and fourth paths do not include publication in a peer-reviewed journal. Preprint publication is the final publication. Read more N. R. Gough, Preprints as Final Publications. BioSerendipity (25 February 2019)
https://www.bioserendipity.com/preprints-as-final-publication/.