Ana is alright. I enjoy the sound but prefer the two "n" spelling, despite the single "n" looking more like it's supposed to be the "ah" pronunciation rather than the short "a".
Ana just looks like it's missing an "n" to me. I've never cared for
Allegra despite her cheerful meaning. The "gra" sound at the end is a bit harsh, I hear the word "leg",the two "l"s reinforce "legs" visually, and there's the product association to boot.
Ana Josephine and
Ana Lenore are my favorites of your combos, both lovely. If I had to pick an
Allegra combo it would be
Allegra Faith for both sound and meaning.
Allegra Clarisse reinforces the product association by also causing me to think of Claritin (or however it's spelled).