Which creatures from the alternative upgrade options do you choose?

I think the opposite; at the beginning, Daughters of the Earth are better because they will slow down and attack neutrals without taking damage in return. With a leveled-up hero and a large army, Blood Wrath comes faster, while with Daughters of the Sky, Blood Wrath doubles their spell power at level 2 and quadruples it at level 3. This results in very high damage.