If anyone here hasn't heard them, it's REALLY worth tracking down two unofficial releases, both on the "Esper" imprint:
While the "ultimate edition" compilation version of the soundtrack is indeed definitive, it's the "Los Angeles November 2019" that gets the most spins in this house. It's all ambient sound effects, incidental, and mood objects, culled from the movie, official video game versions, and other sources. The ultimate ambient Blade Runner.
UPDATE: And now it seems there's a 25th(?) anniversary Esper Edition, expanded, remastered, I guess I'm going to have to find this one now.