With regard to "hubbub", there was an article in the New England Historical Genealogical Record
many years ago that seemed believable. It stated that not many years after the foundation of
Boston, the Massachusetts Indians had a gambling game in which animal "knuckle" bones were
used like dice. As is almost universal in such gambling, loud cries were uttered in hope of influencing
the result of the throw. "Hub! Hub!" was said to be the Indian exhortation employed. New Englanders brought it to England as a word describing mass babbling at parties.
It seems to me that its antiquity as onomatopoiea makes it quite acceptable.