I discovered Warhammer 40K quite late, and something struck me:
There is a french comic called the Incal, set in a Sci-Fi world led by a "perfect imperoratriz", a supposedly perfect androgynous ruler wisely leading the human empire from the golden planet. This series also features a large techno-priest sect worshipping the machines (though they're bad guys supporting the darkness)
The Incal was published from 1981 to 1988, so anterior to the first release of Warhammer 40K in 1987!
Is this enough to suppose a large inspiration from the Incal or are there other more obvious sources at this time that I would not know of?
No matter how much I searched, I could not find any mention of the Incal in the articles about W40K.