deceaseds
Deceased refers to a person who has died. The conventional term to describe someone who has passed away is the deceased, used in both speech and writing. For multiple individuals, the standard phrasing is the deceased or deceased persons; the form deceaseds is uncommon and generally considered nonstandard in modern English.
In legal and probate contexts, the phrase the deceased marks the subject of estate and succession proceedings.
Records and memorials: Obituaries announce the death and summarize life achievements; death certificates and vital records
Usage note: The word late as a modifier, e.g., the late Jane Doe, is a polite alternative.