You have some interesting ones.
G/G:
Adriana &
Nicolette - these names aren't my favorites but I think they go well together. Very frilly & luxerious
Madison &
Melissa- interesting bc
Madison is such a trendy 90's/00's name and
Melissa was dated by then bc it was so popular in the 70's/80s
Viktoria &
Kristina - prefer
Victoria but nice strong pairing. Maybe bc they used the K in one name they felt they had to use it in the other?
Kate &
Tess - prefer these as nicknames but they go great together
Triplets:
Sabrina,
Samantha, &
Mercedes - I always feel bad when there seems a theme or similarity between 2 but not the third. Poor
Mercedes is left out with no name starting with S or even ending with A.