Just some quick additional info notes after looking at the recent posts, looking at the faces and battlers, and doing some additional quick research yesterday
The Battler of the the red haired lady with the eye patch has he ridding on a tiger, which could be an indication of her being Neko Gozen. Neko also means cat in Japanese. Plus she is seen ridding a bear I understand in a video game that has her. The differences in the eye patch design may be another indicator too. I've seen Date's patch have some design work on it in some modern depictions while her's doesn't have the design work done by the same artist. The hair style face_06 also fits with some depictions I've seen of her too.
One friend I asked about it said also that in a Japaenese video game has Date Masamune and other male warlords depicted as females in it and she looks just like the female version of Date Masamune in it. Hair color, hair style, etc. are the same.
mos2 & face_10 is Nouhime I'm strongly suspecting. If you do a Google image search of her you'll see some modern depictions that resemble the demonic woman in the picture.
Her modernized depiction in various video games is not accurate at all compared to her in history. She is a usually sadistic femme fatale in most modern inaccurate depictions I found of her.
Tokugawa Ieyasu was mentioned as being mos15. This is dead on correct. The exact look of the battler is heavily inspired from how he appears in a modern video game. See the pic at the link I've given.
http://www.gamecity.ne.jp/orochi2/dlc/images/cos/sp-sg01etc/06_750-M19_ieyasu.jpg
face_23 is him too, but he isn't in armor like in mos15. He does have the same mon and if you look carefully at the faces pf the two images you can easily tell they are the same person just in different dress.
The female version mos16 & face_24 of Tokugawa Ieyasu has three hollyhock leaves mon and several similarities to the male version. I could find nothing similar to design in any female character in any modern video game and female versions others have of Tokugawa Ieyasu.
If one really wanted to say it wasn't a female Tokugawa Ieyasu it could be one of his wives or consorts such as Saigō or Tsukiyama.
Female versions of the male historical figures are very popular and do show up in several Japanese games and animated series.
I'll better wrap this up for now as my brain is mush.
One final comment one of the few English sources that contains information on the women is the translation Yoshikawa's Novel Taiko ki (English translation title : Taiko: An Epic Novel of War and Glory in Feudal Japan.)
It is a good read but not as good as Musashi. (Would love for Yoshikawa's first famous work
Naruto Hitcho ( Secret Record of Naruto) to get an English translation as that was the work that intially made him famous in Japan.)