Katrina is definitely my favourite by quite a long way.
But I do agree that Dana Darlington sounds fabulous - ready made for the stage and screen!
You've got quite a range of names there so it's quite hard to give other suggestions.
I'd say Dana and Valentina have a sort of luxurious European (or possibly even Southern Belle?!) kind of vibe to them. Maybe akin to names like:
Avril, Ariadne, Adelaide, Amber, Adeline, Blair, Carmen, Celeste, Cecilia, Delores, Emmeline, Georgette, Gloria, Isadora, Juliette, Jonquil, Jacqueline, Lucille, Lavinia, Leandra, Marcella, Madeleine, Melisande, Marianne, Nadine, Opal, Ruby, Seraphina, Scarlett, Tara, Tamara, Therese, Tallulah, Vivienne, Veronique
Penelope, Delilah and Katrina sound more 'established within the UK without being either 'trendy' or especially popular'. Maybe on a par with:
Anastasia, Belinda, Clarissa, Cassandra, Daphne, Evangeline, Francesca, Felicity, Georgina, Hermione, Henrietta, Joanna, Julia, Katherine, Louisa, Miranda, Natasha, Paloma, Rhiannon, Stephanie, Samantha, Tabitha, Vanessa
Dolly is in the 'cute, old fashioned' trend along with:
Annie, Bonnie, Bessie, Betty, Betsy, Dora, Esme, Elsie, Elsa, Edie, Evie, Hattie, Hetty, Heidi, Ivy, Ida, Lily, Molly, Millie, Maisie, Mary, Maggie, Nancy, Nelly, Posy, Polly, Peggy, Ruby, Ruth, Sally, Susie, Tilly, Trixie
Bobbi is quite 'unisex American' alongside:
Avery, Aubrey, Blake, Billie, Camryn, Candy, Danika, Ellis, Everly, Fallon, Harley, Hadley, Jordan, Morgan, Paige, Piper, Quinn, Riley, River, Ronni, Sutton, Spencer.
And I don't think Wednesday belongs in any genre other than days of the week really!