In terms of unquestionable spellings, I think [name_f]Emma[/name_f] and [name_u]Harper[/name_u] are the best of your list. There are several other spelling variations of [name_u]Skylar[/name_u] and [name_f]Kinsley[/name_f]. And while you would think everyone would get [name_f]Paige[/name_f] right, my sister is named [name_f]Paige[/name_f] and people spell it ‘[name_u]Page[/name_u]’ half the time. So annoying.
Here are some names that pretty much have one spelling (or one spelling far more common than any other variation, like [name_f]Rachel[/name_f]):
[name_f]Abigail[/name_f], [name_f]Alice[/name_f], [name_f]Alma[/name_f], [name_f]April[/name_f], [name_f]Audra[/name_f], [name_f]Audrey[/name_f], [name_u]Aubrey[/name_u], [name_u]Avery[/name_u], [name_f]Avril[/name_f]
[name_u]Bailey[/name_u], [name_f]Becca[/name_f], [name_f]Bella[/name_f]/[name_f]Belle[/name_f], [name_u]Blake[/name_u], [name_f]Bridget[/name_f], [name_f]Brielle[/name_f]
[name_f]Camille[/name_f], [name_f]Caroline[/name_f], [name_f]Celeste[/name_f], [name_f]Claire[/name_f], [name_f]Clara[/name_f], [name_f]Cora[/name_f], [name_u]Courtney[/name_u], [name_f]Chloe[/name_f]
[name_f]Daisy[/name_f], [name_f]Dawn[/name_f], [name_u]Delaney[/name_u], [name_u]Drew[/name_u]
[name_u]Eden[/name_u], [name_f]Eve[/name_f], [name_f]Eva[/name_f], [name_f]Eleanor[/name_f], [name_f]Eliza[/name_f], [name_f]Elle[/name_f], [name_f]Ella[/name_f], [name_f]Emily[/name_f], [name_u]Evelyn[/name_u]
[name_f]Faith[/name_f], [name_f]Felicity[/name_f], [name_f]Fiona[/name_f]
[name_f]Gabrielle[/name_f], [name_f]Gabriella[/name_f], [name_f]Gemma[/name_f], [name_f]Georgia[/name_f], [name_f]Georgina[/name_f], [name_f]Grace[/name_f], [name_f]Gretchen[/name_f], [name_f]Gwen[/name_f]
[name_u]Hadley[/name_u], [name_f]Hannah[/name_f], [name_u]Harley[/name_u], [name_u]Haven[/name_u], [name_f]Hazel[/name_f], [name_f]Heather[/name_f], [name_f]Holly[/name_f], [name_f]Hope[/name_f], [name_u]Hunter[/name_u]
[name_f]Iris[/name_f], [name_f]Ivy[/name_f]
[name_f]Jane[/name_f], [name_f]Jenna[/name_f], [name_u]June[/name_u], [name_u]Joan[/name_u], [name_f]Jocelyn[/name_f], [name_u]Josie[/name_u], [name_f]Joy[/name_f], [name_f]Julia[/name_f]
[name_u]Kendall[/name_u], [name_u]Kelsey[/name_u], [name_u]Kennedy[/name_u], [name_u]Kimberly[/name_u], [name_f]Kyla[/name_f]
[name_f]Lacey[/name_f], [name_u]Lane[/name_u], [name_f]Laurel[/name_f], [name_f]Lauren[/name_f], [name_f]Layla[/name_f], [name_f]Leah[/name_f], [name_f]Leona[/name_f], [name_f]Libby[/name_f], [name_f]Lily[/name_f], [name_f]Louise[/name_f], [name_f]Louisa[/name_f], [name_f]Lucy[/name_f], [name_f]Luna[/name_f], [name_f]Lydia[/name_f]
[name_f]Mara[/name_f], [name_f]Marilyn[/name_f], [name_f]Miley[/name_f], [name_f]Matilda[/name_f], [name_m]Maxwell[/name_m], [name_f]Mavis[/name_f], [name_f]May[/name_f], [name_f]Melody[/name_f], [name_u]Meredith[/name_u], [name_f]Melissa[/name_f], [name_f]Mia[/name_f], [name_f]Mila[/name_f], [name_f]Michelle[/name_f], [name_f]Miranda[/name_f], [name_f]Molly[/name_f], [name_u]Monroe[/name_u]
[name_f]Noelle[/name_f]
[name_u]Paisley[/name_u], [name_f]Pearl[/name_f], [name_u]Piper[/name_u], [name_u]Presley[/name_u]
[name_u]Quinn[/name_u]
[name_u]Raven[/name_u], [name_u]Reese[/name_u], [name_u]Riley[/name_u], [name_f]Rose[/name_f], [name_u]Ruby[/name_u], [name_f]Roxy[/name_f], [name_f]Roxanne[/name_f], [name_f]Ruth[/name_f]
[name_f]Sabrina[/name_f], [name_f]Sadie[/name_f], [name_u]Sage[/name_u], [name_f]Samantha[/name_f], [name_u]Sawyer[/name_u], [name_f]Serena[/name_f], [name_u]Simone[/name_u], [name_f]Sophie[/name_f], [name_f]Sophia[/name_f], [name_f]Stella[/name_f], [name_f]Summer[/name_f], [name_u]Sydney[/name_u]
[name_f]Tara[/name_f], [name_u]Taylor[/name_u], [name_f]Tess[/name_f], [name_f]Tessa[/name_f]
[name_f]Valerie[/name_f], [name_f]Vera[/name_f], [name_f]Violet[/name_f], [name_f]Virginia[/name_f]
[name_u]Whitney[/name_u], [name_f]Willa[/name_f], [name_f]Willow[/name_f]
[name_f]Zara[/name_f], [name_f]Zoe[/name_f]