Woman in front is Filipino heritage. Specific facial features are clear to say that. Definitely not Japanese heritage.
One in back looks she may be the Nachmanoffs picture. Hair is similar. Harder to say ‘definitely’. I still lean toward Filipino on Dock and Nachmanoff picture is inconclusive. Bad angle and low quality.
Dock photo seems mechanically suspect (i.e. possible photoshop). I know that if is authentic it is departure not arrival. Seems like a lot of leis on Senior. Maybe that is appropriate given his nature!
There is no documented evidence I have seen of any intimate relationship, marriage or child between BHO Sr. and any Filipina anywhere. If any FReeper has such evidence, particularly contemporaneous evidence, please post it or drop the Filipina references! There is no there there that I have seen.