Elisabeth - not keen. Full name is okay but, like you, I'm not that keen on any of the shorts.
Mary - quite like it
Annie - not keen but do really like Annika, Annabelle etc
Maggie - really strongly dislike this. I think it sounds so ugly
Daisy - it's ok.
Lucy - quite like it
Rebecca - this is my name and I love it but don't really like being called Becky which I get a lot.
Laura - quite like it
I think maybe you want something quite short and simple to go with Jack and Kate?
Amy, Alice, Anne, Belle, Chloe, Claire, Connie, Darcey, Emma, Ella, Ellen, Eva, Esme, Edith, Erin, Faith, Grace, Hannah, Holly, Hazel, Hope, Ivy, Iris, Lily, Lucy, Leah, Lauren, Lara, Mia, Maia, Megan, Nicole, Phoebe, Polly, Poppy, Ruby, Rose, Rosie, Rosa, Sadie, Sophie, Sarah, Thea, Zoe, Zara