Hi Paul,
I believe all three of your pieces are Meadow Garden. The colourways are often difficult to identify since they vary quite a bit and some variants were not recorded or given an official name. My stab at it is to say the first item is MG Violet; the second item is MG Cornflower; and the third one is MG in an unknown, unnamed colourway. All three are illustrated here:
http://iowstudioglass.wikidot.com/meadowgarden. Please note my cautionary comment in the colourways section of this page. Since MG was made in the 1980s
generally they have triangular labels on them, while Summer Fruits was made from 1993 to 2012 and they usually have square labels. (Labels give a general, usually helpful guide, but are not absolute guarantees of dating.)
MG is a commonly found design and I have seen a lot of it. But frequently I have had to restrain myself from tearing my hair out.
Hope this helps.
Anton