Some sibsets I've seen are:
Calvin, Caleb, and Claire- love the names, but the boys both having Cal at the beginning throws me
Andrea, Destiny, Daniel, Dakota - this one is mine. I'm Andrea and my brother Daniel is my half brother on my mom's side. Destiny and Dakota are my half sister and half brother on my dad's side. I've always found it odd that somehow my parents that were not together or in contact when any of my siblings were born happened to use the same letter for the rest of them, but not with me.
Christopher, Brandon, Daniel, Liam, and Clara- this is my brother's sibset on his dad's side. His half brothers and his half sister. The name styles between Daniel and Liam to me seemed to change drastically.
Anthony, Aden, and Alyjah- I see what the parents were going for, but changing the spelling of the classic Elijah to fit the pattern throws me off. Also, I'm not sure if they spell it Aden or Aiden, but the brother I talk to spells it as Aden.