I notice that you are grouping them into pairs by their initials. Is there a reason for that? I probably would avoid that grouping since it sort of divides them into teams–the R babies and B babies–that they might not feel part of later. Sharing initials can be a special bond, but why with only one of your quad siblings? Plus, they will probably always be known as the quads since quads are so unusual. Having his own set of initials might make each child feel more special: he has his own name and initials when he will have to share his toys, clothes, bedroom, birthday… Anyway, I know there is a tendency to share initials between twins, but since they aren’t two sets of twins, I would do something that is cohesive for all four instead of two and two. What if each baby’s middle name began with the same letter of another’s first name, like a linking circle? For instance: [name]Matthew[/name] [name]Anthony[/name], [name]Alexander[/name] [name]Hudson[/name], [name]Henry[/name] [name]Burke[/name], [name]Benjamin[/name] [name]Mitchell[/name]…
I think mischa’s suggestion will get you that cohesive feel you desire. Your third set of choices is my favorite except that I would trade traditional [name]Benjamin[/name] for something fresher to match [name]Reilly[/name], [name]Burke[/name], and [name]Rhys[/name]’ shorter length and more modern usage. [name]Connor[/name] or [name]Ronan[/name] would be a good fit. The other sets have great names in them, but because the styles are rather mismatched, they don’t feel cohesive to me.
Here are some more ideas for groupings, including some suggestions:
[name]Rhys[/name] [name]Corbett[/name], [name]Connor[/name] [name]Barnett[/name], [name]Burke[/name] [name]Griffin[/name], and [name]Garrett[/name] [name]Ronan[/name] (another initials circle)
[name]Mitchell[/name] [name]Reilly[/name], [name]Hudson[/name] [name]Burke[/name], [name]Barrett[/name] [name]Casper[/name], and [name]Porter[/name] [name]Thom[/name]
[name]Matthew[/name] [name]Anthony[/name], [name]Benjamin[/name] [name]Corbett[/name], [name]Caleb[/name] [name]Mitchell[/name], and [name]Thomas[/name] [name]Barnett[/name] ([name]Thom[/name])
[name]Thaddeus[/name] [name]Henry[/name], [name]Casper[/name] [name]Benjamin[/name], [name]Barnaby[/name] [name]Matthew[/name] ([name]Barnes[/name], [name]Abe[/name]), and [name]Hugo[/name] [name]Anthony[/name]
More traditional ideas: [name]Andrew[/name], [name]Philip[/name], [name]Lane[/name], [name]Peter[/name], [name]Robert[/name], [name]Michael[/name], [name]Everett[/name]
More surname ideas: [name]Hayes[/name], [name]Weston[/name], [name]Gage[/name], [name]Tatum[/name], [name]Banning[/name] or [name]Channing[/name], [name]Tiernan[/name], [name]Winslow[/name], [name]Austin[/name], [name]Marshall[/name], [name]Grant[/name], [name]Nolan[/name], [name]Brent[/name], [name]Penn[/name], [name]Campbell[/name], [name]Sullivan[/name], [name]Grady[/name]
More Celtic ideas: [name]Lochlan[/name], [name]Patrick[/name], [name]Gavin[/name], [name]Tristan[/name], [name]Brett[/name], [name]Bryce[/name], [name]Eamon[/name], [name]Graham[/name], [name]Finlay[/name], [name]Ian[/name], [name]Lennox[/name], [name]Rory[/name], [name]Declan[/name], [name]Beacan[/name], [name]Brady[/name], [name]Rafferty[/name], [name]Callum[/name], [name]Liam[/name]