Can somebody link me the fanrules for 30k xenos and other non human forces that would be active during the hh.

The more I read the more I start to think the great crusade deserves game recognition along with the heresy. That whole pre- 40k era should be the focus. Certain legions don't really get to shine without it (Death guard, Iron hands,) and there seem to be a lot of material for cool xenos to fight that aren't included in 40k like Uluméathic League, Vassalian, Donarathi, Cimmeriac, Thexians, Draxians, Noisome Reek, Xenarch, Saharduin, Dracolith, and Szaeyr. Im not saying give them all full armies, but maybe a few token models to build armies out of would be cool.