The two vases that Charles has shown in post #4 have canes that are known to have been made by Effetre (after they took over (?) Moretti). One company that certainly used, and maybe still does use, those canes is Livio Campanella.
A search on the Board for Effetre and / or Campanella will locate several other threads relating to canes of that type. Unfortunately the lower level pages for the Effetre website are not currently showing so the canes cannot be viewed directly.
As for the other vases ...
Post #1 has canes with colours that I personally find unattractive and these are known from many paperweights that are possibly pre-1960s Murano but of uncertain maker (but often said to be Fratelli Toso)
Post # 6 has canes that I do not recognise, but Anita's point about thin cane slices is very pertinent, to which I would add that the many straight edges when set together makes them look quite distinctive. But I do not recognise these from paperweight use.