creators = [{"name"   :{"name_authority"    :TextField,
                          "name_authority_id" :IntegerField,
                          "display_string"    :TextField},
              "user_id" :IntegerField,
              "roles"   :[TextField],
              "attrs"   :[TextField],
              "xts"     :[TextField]}]

Yes you could do something like this. But the lack of keywords does reintroduces some noise via the quotes around strings. Moving the colons around like this to give visual alignment would probably be frowned upon. So my sense is that this would be considered "un-Pythonic" but I could be wrong.