I think
Violet is such a pretty, sweet name with a bit of spunk.
Jessie Violet is nice, but I prefer
Ada Violet.
Meadow Violet is a little much imo. I like
Jessie Violet,
Meadow Emily and
Ada Violet the best of your combos. The only combo that I really, really love from your list is
Bella Rose. A bit un-original, but still a lovely combo.