Warhammer 40k map

I am currently working on a Warhammer 40k map that will truly give the Universe justice. I am striving to keep it as canonically correct as possible, but am having trouble coming up with all of the units. If anybody on this site is a 40k lore-fanatic like I am, I would truly appreciate your assistance in the creation of the units of this map (specifically those of the Dark Mechanium, it seems like the only faction that I don't know fairly well). I've just wrapped up the Screaming Vortex region, but can't truly finish it if I don't have the proper units for it.

Also, I would greatly appreciate assistance with the creation of the map itself, as I'm building it from scratch and the galaxy is so huge that I know that I'll miss some things. Any help that you can offer will be of great assistance.

BLOOOOOOOOOOOOD FOR THE BLOOOOOOOOOOOOOOOOOOOD GOOOOOOOOOOOOOOOOOOOOOOOOOOOD

PM Me If You Need Me, Happy To Help