I have half a recollection of Wyll swearing by �the triad�, who according to my reading of the FR wiki, are Torm, Tyr and Ilmater. I think there�s a comment he makes after one of the stages in Gale�s personal quest where he compares Gale�s devotion to Mystra to his less pious viewpoint. Perhaps someone who knows more about the Faerunian pantheon has a more definite recollection.
The only coins I recall Karlach mentioning are the soul coins. I�m not sure who I�d see as a natural fit for her. As Gray Ghost says, perhaps Ilmater as the deity of the oppressed?
I don�t think of Minsc as tied to one god as opposed to �goodness�, but potentially Mielikki? She�s a goddess of rangers and the FR wiki tells me she has a counterpart/aspect worshipped in Rashemen.