Thanks to Frank F. for these comments on the Young Brides # 6 post:
Could be the inks were by S/K studios–the assembly line way. One guy outlines the pencils in ink, another spots in the blacks and shading and then some touch up and tweaks by another guy. Those guys could be Joe, Jack and Mort Meskin and whomever else was working in the studio at that time that had art chores.
Frank also sent this in responding to the Big Barda illustration:
Have you been to the WhatifKirby site lately? These are on there in the Recreations Gallery.