I don't wana diss the orcs but... After Garrosh or the Iron Horde they still followed Sylvanas so...
Regarding the Zandalari, they united against everyone, not just the Horde, to claim back their ancestral lands.
However the Darkspear don't seem to hold grudges against the Zandalari. They were one of the main forces helping out the Horde in Zandalar.
Ty'jin considers them too stuck up but cool:
And Rokhan, the current Darkspear leader is really supportive of Talanji and I totally ship themDa Darkspear and Zandalari got plenty of differences, true, but we got even more in common.
If da Zandalari ever get da sticks outta their bums, I think we gonna be good friends!
On the Zandalari side, we have Talanji claiming that she admired Vol'jin and the Darkspear