What I think would work here: a Georgian or Victorian (classic, elegant, feminine) name with a short middle name and a cool short form.
ideas:
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Augusta[/name_f] [name_f]Sophie[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_m]Augie[/name_m]/[name_u]Gus[/name_u]/[name_u]Gussie[/name_u])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Adelaide[/name_f] [name_f]Claire[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Ada[/name_f])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Arabella[/name_f] [name_f]Jane[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_u]Bell[/name_u])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Beatrice[/name_f] [name_f]May[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Bea[/name_f])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Catherine[/name_f] [name_f]Lucy[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_u]Kit[/name_u])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Charlotte[/name_f] [name_f]Emma[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Lottie[/name_f])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Caroline[/name_f] [name_f]Mary[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Callie[/name_f])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Constance[/name_f] [name_f]Rose[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Coco[/name_f]/[name_u]Sunny[/name_u])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Frances[/name_f] [name_f]Eve[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_u]Frannie[/name_u])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Frederica[/name_f] [name_f]Rose[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_u]Fritzi[/name_u]/[name_u]Fee[/name_u])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Georgiana[/name_f] [name_f]May[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_u]Georgie[/name_u])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Helena[/name_f] [name_f]Jane[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Nell[/name_f])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Harriet[/name_f] [name_f]Jane[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Hallie[/name_f])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Isabella[/name_f] [name_f]Louise[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Ibby[/name_f]/[name_u]Bell[/name_u])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Lydia[/name_f] [name_f]Claire[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and Liddy)
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Louisa[/name_f] [name_f]Emily[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_m]Louie[/name_m])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Lucy[/name_f] [name_f]Claire[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Lux[/name_f])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Madeline[/name_f] [name_f]Eve[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]May[/name_f])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Matilda[/name_f] [name_f]Amy[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Tilly[/name_f]) — if you don’t mind the [name_f]Matilda[/name_f] / [name_f]Maud[/name_f] connection…
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Penelope[/name_f] [name_f]Jane[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Nell[/name_f])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Rosamund[/name_f] [name_f]Claire[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Rosie[/name_f])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Sophia[/name_f] [name_f]Louise[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_u]Fee[/name_u]/Fye)
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Sylvia[/name_f] [name_f]Mary[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and Syl)
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Theodora[/name_f] [name_f]Jane[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_u]Teddy[/name_u])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Victoria[/name_f] [name_f]Lucy[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Vita[/name_f])
[name_f]Eleanor[/name_f] [name_f]Grace[/name_f], [name_f]Amelia[/name_f] [name_f]Maude[/name_f] & [name_f]Wilhelmina[/name_f] [name_f]Eve[/name_f] ([name_f]Nora[/name_f], [name_f]Mim[/name_f], and [name_f]Mina[/name_f])