I agree 100%. While I agree
Ava is lovely, it has a completely different feeling for me, more exotic and sophisticated.
Ava has loads of energy.
Ada is more down-home and sensible, yet delicate.
My only fear with
Ada is that someone will one day use it as a mn without realizing that it sounds like "ate a" after a fn. :-P
From your list, I love all except
Ada Ruth. I just don't like
Ruth.
Ada Frances and
Ada Winifred are my favorites.