Darkest Star games produces not-Zhodani figures in their "Venturian" line of 15mm and 6mm figures.

Review and painted samples http://paintplayrepeat.blogspot.com/search/label/Darkest%20Star%20Games (not my review, just passing it on)

Store page https://www.darkeststargames.com/dark-star-6mm-sci-fi.html