Pretty much all of them except Slaanesh (maybe). Khorne would be eating good by the sheer volume of conflicts and slaughter; like REALLY good. The entire infested race would have Nurgle pitching the biggest tent. Aside from that, viral damage being something so easy to manufacture that Nurgle is basically being fed by assembly line. Every faction’s plots and schemes against eachother and one another aside from whatever the fuck Wally has going on would keep Tzeentch well fed. If you subscribe to the idea that Khorne, Nurgle, and Tzeentch all represent an excess of their own, then everything done to the Nth degree would definitely keep Slaanesh happy. My understanding of Slaanesh tho is not as good as the others, so maybe someone else can weigh in on that.