Sorry ATI but as a David myself... the Female Equivalent has been reserved as Davina... as yes thats when i fancy letting my Feminine side out LOL ;)
But on a serious note, if the Weyland Company was real and its Synthetics i would certainly assume the Female Versions would outsell the Male Counter-parts.
The information from the Origins Novel is interesting as it indeed suggests that as of the Time-Line around the Covenants Launch that Female Synthetics are also available and Jacob is either Misinformed, or does not have much knowledge or interest in the Synthetics...
Or otherwise it would imply the Walter Model is a NEW model that has not been released for very long prior to the Covenant Mission. We could even speculate from this information that the Covenant Ship is one of the first to Employ a Walter Model.
Regarding the Weyland Virals for Prometheus and the Prologue for Alien Covenant, i dont think we can read into the Prometheus back ground information much anymore. Hence why the site was taken down.
AC and the Novels seem to imply David in the movies is the FIRST of his kind, now the Prometheus Virals had the First David as being unveiled in the year 2025 some 69 years prior to Prometheus.
The AC Prologue Guy Pearce was 49 years old... I think looking at Weyland in AC we can assume he has to be between 45-50 years old in this scene. If they are keeping to the Peter Weyland Born in 1990 this means this Scene takes place in the year 2035-2040.
When looking at descriptions of the David Models, the level David was at in this Prologue would hint at it being the David 3 or David 4 Models...
But we have to consider that Alien Covenant has Re-wrote the Weyland Timeline as far as Prometheus, and if this is the FIRST David then its safe to assume that David was first created around the year 2035-40 and NOT 2025.
It really comes down to those working on the Projects not having any consideration for previous LORE or HISTORY and so we get a make it up/change it as we go along..
My Interpretation of this Prologue Scene prior to seeing Alien Covenant and even after... (prior to the Origins Novel) was that David Proto-types would have their Memories/Soul uploaded to the next Model.
But looking at the Prologue it appears this shows the FIRST David because he Names himself after the Statue of David. Looking at how Old Peter Weyland looked he would pass for at least 40 years old, and NO older than 55. So this kind of causes conflicts.
A lot now depends if Peter Weyland was still born in 1990 or now its been changed to much latter.