I highly recommend Japan: The Cookbook. It is a pretty large book that’s absolutely full of Japanese recipes!
I have all of those cookbooks and quite like them. Of that list I think Washoku is probably my favorite.
Japan, The Cookbook by Nancy Singleton Hachisu is probably more inline with what you are looking for I think though.
But really, as someone who cooks Japanese food a lot, I think you won't go wrong with any of those.
Japan: The Cookbook, perhaps?
https://www.amazon.com/Japan-Cookbook-Nancy-Singleton-Hachisu/dp/0714874744
I bought this during Amazon's BF weekend sale based on some recommendations and it seems very good. Admittedly, I haven't cooked from it yet, but have browsed through it a few times it is full of traditional Japanese cooking recipes and techniques (read: not Americanized Japanese food).
Nancy Singleton Hachisu has written a few books that sound up your alley (e.g. Japan: The Cookbook). She's originally from the US but has lived in the Japan countryside for many years after marrying a Japanese man, and her writing reflects her extensive learning experiences and research.
I love this book
Japan: The Cookbook (FOOD COOK) https://www.amazon.co.uk/dp/0714874744/ref=cm_sw_r_sms_api_i_5WSIFbEHF5458
I have these three that I like quite a bit:
https://www.amazon.com/Japan-Cookbook-Nancy-Singleton-Hachisu/dp/0714874744 is a pretty comprehensive and authentic tome.