Since What Measure Is A Non-Classic
seems to be the zombie discussion which Will Not Die and people complain about having to read dead authors, maybe the alternate selection category for October should be "Undead Authors".
It should be an interesting challenge to come up with enough qualifying nominations for authors whose works continued under their names after their deaths, via the excuse of someone "fleshing out" their "leftover notes and outlines" for that book which they like totally intended to write all along if that pesky mortality hadn't felled them, or just plain farmed out to a junior co-author whose glorified fanfic skillz just aren't up to it.
And given what some of the ghostwriters come up with as All-New! All-Different!* in long-established beloved worlds†, there's bound to be some overlap with the regular "Horror" theme of the month.
* Hope you survive the experience!
† Y HELO THAR, DARKOVER! And Pern. And Dune