[name]Alexis[/name] [name]Renee[/name] - Quite nice. Distinctive but possibly a little masculine since I belive they’re both unisex names. Nice though
[name]Grace[/name] [name]Elizabeth[/name] - A little ordinary. I imagine there’s a few [name]Grace[/name] Elizabeths in the world
[name]Leah[/name] [name]Rose[/name] - Very pretty but maybe a little too pretty. Sounds like a childrens book character a little.
[name]Kaydence[/name] [name]Marie[/name] - Ok but I’ve never been personally keen on kaydence
[name]Avery[/name] [name]Elise[/name] - I think this is the best mix of new and old, boyish and girly, hard and soft
[name]Alexis[/name] [name]Renee[/name] - this has quite good flow, but [name]Alexis[/name] is very popular at the moment.
[name]Grace[/name] [name]Elizabeth[/name] - both names are beautiful, but I am not so sure about the flow.
[name]Leah[/name] [name]Rose[/name] - out of your combinations, I feel this has the best flow. That said, [name]Rose[/name] is an extremely popular middle name at the moment - would you consider giving it or a variation the fn place, instead?
[name]Kaydence[/name] [name]Marie[/name] - I love [name]Marie[/name], but personally prefer the [name]Cadence[/name] spelling.
[name]Avery[/name] [name]Elise[/name] - I am fonder of some of your other choices, and I don’t feel the flow of this is brilliant.
So my vote is for [name]Leah[/name] [name]Rose[/name], with [name]Grace[/name] [name]Elizabeth[/name] in second place.
Some alternatives to [name]Grace[/name] [name]Elizabeth[/name] which I feel have better flow :
[name]Grace[/name] [name]Renee[/name]
[name]Grace[/name] [name]Marie[/name].