If they do name their daughter after any in the family, it probably won’t be directly. The only exception I can see is Philippa, Phyllis, or even Philomena if Harry wants to follow suit with Eugenie and Zara, or Harriet or Henrietta to match Archie Harrison. Personally, I’ve been manifesting Doriana (Doria and Diana combined, while also referencing Doris, Meghan’s grandmother, and they can call her Dory since they’re big Disney fans).
Evangeline- means “good” and who match the other half of Archewell
Dia- A Greek name in honor of Philip using the common letters of Do