Against which factions is it easier for demons to fight, and against which is it more difficult?

I think the most inconvenient race for playing against Demons is Orcs, because all Orc heroes mainly focus on attack, and Orcs have Blood Fury. If it accumulates, the damage will be absorbed by Blood Fury. And, in my opinion, Sorceresses are not very effective against Demons. If a player playing as Demons manages to accumulate a lot of Imps, the Sorceress hero will be left without mana.