Syd Mead did amazing work on Blade Runner but the crowded urban city-scapes, multicultural and filled with ads were inspired by Mobius' Long Tomorrow.
These http://www.openculture.com/2018/09/long-tomorrow-discover-mo... and https://www.neondystopia.com/cyberpunk-books-fiction/the-leg... discuss the influences that The Long Tomrorow had.
On Moebius in general, https://www.moebius.fr/?lng=en is a good starting point.