I don't care for
Wilma. I like
Willa better. I agree with your imagery though of homebaked oatmeal goodness and I guess that is why I don't like it that much. Oatmeal or anything with oats is heavy & I like light names, more lemon meringe or sorbet :)
It seems that the lighter names are coming back (
Sophie,
Annabelle) so I don't see it getting popular. It has a similar feel to
Matilda so I like that as a sibset. I'm not sure about a middle name; I can't think of anything I like.