@kimlockhartga@bookstodon for anthologies I would tend to sort them by the title of the anthology so that if you have multiple related anthologies even if their editors differed year over year your copies are shelved together. I also shelf shared world books together
(Ie stuff like “Years best …” where the editor might vary)
My challenge is both running out of shelf space and I usually keep my unread books shelved separately from those I have read. But need to do another round of reorganizing