Hi, I haven't watched that many taiga dramas, to be honest, but I highly recommend these:
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Yae no Sakura, about a woman who served as a sharpshooter for the Shogunate army in the late Tokugawa era, and eventually became an educator and a nurse during
the Meiji era.
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Shinsengumi, which is of course about the famous Shinsengumi. They were a militia of Shogunate loyalists who served as some sort of police force in Kyoto.