You know, like Fujin and stuff.

Well there is Raiden, Fujin, God of Fire, God of Water, and God of Earth.

I don't think there were names for those gods.

By the way, wrong forum.

There were some names for the other three gods circulating, but it's been determined that they were only created names. Officially though you're right, they are only referred to by their elements.

But I remember the water one was Sujin and that they all ended in jin.

Nope, Miks is right; even in the credits for the Mythologies game, Fujin is simply called "God of Wind". None of the other elemental gods have had names.