[Belegorn]

I think that perhaps Melkor should be included. Although he is said to have "had a share in the gifts of all his brethren" [Silmarillion; Ainulindalë] it is to Aulë that his gifts mirror, "Melkor was jealous of him, for Aulë was most like himself in thought and in powers....Both, also, desired to make things of their own that should be new and unthought of by others, and delighted in the praise of their skill." [Valaquenta]