Yeah, it's really sad, this has been great. I really hope the mangaka knows some people really appreciate their work, and if this must end, are looking forward to what comes next.
Every picture has them showing an Adam's apple, like the two known guys, and I can't find an instance of a known lady showing one in the comic. Hair and piercings are indeed most likely band things. Also the chin is drawn square in panels in at least pages 6, 13 (bottom panel) and 19. They're...
Nope, that's WH: The Old World stuff, not a 40K one. Reverse search leads to the following image title:
"A Dragon-Blooded Shugengan Lord mounted atop his Jade Longma mount."