Ok, I’ve been using the hosts from the underworlds to screen out middle objectives, and setup olynder buried behind one of the squads. The chainrasps have been getting picked up as you said lol, but I don’t have more than 20. The reapers I’ve been using to fight whatever with the teleport to my general ca , and the black coach has been supporting the spirit hosts and generally being a nuisance.
My areas meta has a good mix, gloomspite, KO, Khorne, nurgle, fec, cos, skaven,(I’m forgetting some),with most people having more than one list build so it’s hard to predict what I’ll face. A fun thing I’ve been enjoying is olynder just melting face at short range against more elite enemies. I could proxy the knight of shrouds as a dread blade harrow, his teleport movement seems really good.