Ulmo

[Secret Fire]

Yes, thy were in the first age, sorry, brain fart. Anyway, you do raise some interesting points on this subject, but

Know then that water was for the most part the dream andinvention of Ulmo, an Ainu whom Lluvatar had instructed deeper than all others in the depths of music...

and also

Aforetime had Ulmo loved the Solosimpi dearly, yet when he heard of their slaughter by the Gnomes he grieved indeed but anger hardened not his heart, for Ulmo was foreknowing more than all the Gods, en=ven than great Manwe...

The fact that I was mistaken in the timing of Tuor and his aid in Gondolin has no bearing, however, in that it still happened, (truly, I am sorry that I crossed my ages) I am not trying to place Ulmo as closer to the will of Lluvatar as

yet more, to Manwe alone, knowing the purity and glory of his heart, did Lluvatar give the privelege of visiting the uttermost heights...

So, I believe we would agree that Manwe was closest in intention with Lluvatar, but

Ulmo and Manwe have been great friends and allies in almost all matters...

, and as the two most powerful vala, this was an excellent arrangement. Perhaps Lluvatar chose to endow Manwe with kingship over Arda is because

good though the heart of that mighty one [Ulmo] he thought ever deep thoughts alone, and was silent and aloof and haughty even to the Ainur.

However, he was most vocal to the elves of all the Ainur and perhaps this was because of the superior foresight granted him by Lluvatar when he taught Ulmo the art of music.