A 5-letter theme is striking my fancy.
Caia and Clio
Salem and Boden
Not sure about middle names
I'd probably die with two sets of twins and 8 total!
But if I had to.... :)
DD1. Margery Wren
DD2. Lila Jane
DD3. Eleanor Ivy
DD4. Georgia Mae
DD5/DD6. Audrey London & Emmeline Florence
DS1/DS2. Gabriel Troy & Simon Miles
I like twin sets that subtly match. The girls would be linked by sharing middles of our favorite European cities, while the boys would both have middles honoring family members from each side. The rest are just combinations that I'm fond of.
Flipped it for fun like some of the others have:
DS1. Gabriel Troy
DS2. Simon James
DS3. Archer Miles
DS4. Locke Alexander
DS5/DS6. Elias Henry & Malachy Jude
DD1/DD2. Margery Wren & Eleanor Ivy