Board Thread:Questions and Answers/@comment-5919632-20130306193800/@comment-3309116-20130320214055

The categorys apply for their current series. So far, the characters who "survive" it's part on the series are living characters and the ones who didn't survive are dead characters. The unknown fate is for the character who are neither alive neither dead for sure.

But in general term, your examples are good. I think Diavolo and Giorno can appear on SBR universe without problems (But Diavolo's scene would be short and deadly for him XD).