Twins in my family called Leo and Cleo (both boys).
I also know a family with a Morgan, Taylor, Adrien, Corey, Charlie, and Stevie - they're all girls. At least the names match.
(siblings) Raven (b) and Annabel - that's kind of cool.
(twins)Jesslyn and Jazzlyn.
(siblings) Jett Philipus & Galaxy Philadelphia Elizabeth (g)
And siblings Briar Freeborn (b) & Hannah Jean. They're not bad names, but REALLY don't match.
The number one craziest sibset I know is Chevrolet "Chevy" (boy), Elcamino "Momo" (girl) and Rocket 88 Berry Lullaby (girl), all named after cars as far as I'm aware. They're a beautiful, wholesome family, just with very eccentric taste in names.
Kalla (boy), Mali (boy) and Aki (girl, pr. Arkie)
Madison Blues (boy) and Tennessee Joe
Nandi Akura, Sayle and Arlo (g, b, b)
Freia Arrow, Aleph Finnegan, Griffin Gael and Essi Honour (boy)
Raphael Amado, Delphi Clea Sappho and Carrillo (can't remember his middle name)
I personally can't stand sibsets that don't match well, for example my friend's cousin has four children, the first three named Stephanie, Marcus and Alannah, and the baby got 'Tiger'. Kind of cool and edgy but not so much with his siblings' names. Also know brother and sister Raven and Erica.