Lovely list! It gives me strong, regal, and poetic vibes; historical, fantasy-esque, occasionally clunky, sometimes elegant.
Some combos…
Hannelore Beatrice Dellen
Anastasia Cariad Lucia
Alfsol Elisabeth Svanhild
Beatrice Nora Cilibelle
Arianrhod Emma Louise
Cecilia Irene Rosemarie
Dellen Hannelore Therese
Eva Blodwen Anastasia
Hannelore Gisela Delores
Henrietta Cariad Jame
Jane Svanhild Tatiana
Susanna Elisabeth Alfsol
Swanhild Tatiana Beatrice
Suggestions…
Kinvara
Adelaide
Adelheis
Delyth
Angharad
Olwen
Morwenna
Georgette
Roselotte
Audra
Swanna
Lillian
Morven
Augustina
Embeth
Elswyth
Nadia
Kaya
Katri
Eleni
Liadan
Rosaria
Ingrida
Sylvia
Tova
Emmeline
Viola