So basically game development normal stuff which is nothing special and a common thing.

On the other hand, I am surprised they didn't borrow more skeleton models/enemies from other games.

Like they used so little the FFXII werewolf type of enemy (the ones you find in Lakeland and the 1st boss of lv87 dungeon).
That game is a single player MMO and there so many animations between auto attacks, casting etc work in XIV