Gah! You have me torn with Alice Rachel!
I mean, Alice is my favorite name in the world and Rachel... isn't. I actually despise Rachel, it being my own name. But, I have to admit-- Alice Rachel has nice flow. I don't think I can think of a better combo if using Rachel is a necessity.
But here are some combos off the top of my head:
Josephine Rachel
Evelyn Rachel
Genevieve Rachel
Matilda Rachel
Odessa Rachel
Sylvia Rachel
Persephone Rachel
Lillian Rachel
Isis Rachel
Felicity Rachel
Dorothy Rachel
Claudia Rachel