I like all your girls names, But love Aaliyah and Laylah.
I love Jade as a middle name - Aaliyah Jade is pretty.
I prefer Laylah Rose - I know heaps of people love it but I'm not a fan of Grace.
I think Sienna Rose sounds beautiful too.
Ellianah needs a 1 syllable middle name IMO as its 4 syllables.
How do you pronouce Lorelei? (Lor-el-eye, or Lor-el-ee?)

I love Caleb and Kaelan/Caelan. And I love James as a middle name (its my DS's middle name).
I would put James with all of your boy names except for Blake - as its only 1 syllable, so I think would sound better with a 2 syllable middle name.

Goodluck deciding.

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