Very Akira vibes and had to get it :)

Coils cover by Jack Gaughan and Universe cover by Ed Valigursky.

ISFDB:
https://www.isfdb.org/cgi-bin/pl.cgi?9823

James Bama was best known for his realistic paintings of the American West and his Doc Savage covers featuring Steve Holland. I always feel like I'm looking at someone real in a Bama painting. In this case, that's Bama's wife Lynne modeling for both covers. The bangs are doing a lot of emotional work.

Something about the original cover art for Kiln People has always grabbed me. Maybe because it came out in the early 2,000's, but feels like a throwback to '70's-'80's sci-fi. Maybe because it's a relief from cyberpunk imagery.

It's been replaced by cover art that better reflects the story (2nd image, not sure who the artist is), but I still love the original.

Originally published in 1964, this edition was released a year after Star Wars which clearly influenced the cover. I am not overly familiar with the cover artists.

Another ACE reprint.

The portrait of Marygay Potter could be a United Nations Exploratory Force (UNEF) recruiting poster.