Are there any styles that sort the bibliography by entry type? E.g. books first, then journal articles, then conference papers (each block sorted alphabetically)?
Thanks, very interesting. If I understood correctly, that relies on Zotero, so sorting by type is not part of the style and will not work with other tools (like citeproc-js or pandoc-citeproc)?
no, that's standard CSL and will work for any tool interpreting CSL correctly, i.e. definitely anything using citeproc-js (which Zotero uses) and presumably also pandoc-citeproc.
http://blogs.eui.eu/zotero/sort-a-bibliography-by-type.html
It's not very hard to do.