Ashi Girl has finished being subbed as far as I remember...and there is a subbed SP too
In general, Japanese historical may not appear as fun or epic as Korean and Chinese. Many are based on or spin-off-ed of a real people and events so the production will try to stay with the actual fact as much as possible. This give Japanese historical less freedom in terms of creativity. The most they could do is time travel...haha
Some are based on legend, classic novels or folklore. In this case, it's similar to Chinese but the way the ancient Japanese social-political worked will make it impossible for it to appear as "grand" as Chinese historical.....the clothing, architecture, fighting art are usually stayed close to the authentic one. However their ninja could appear fancy and more action-pact in fighting.
I think the most important thing if you want to try out Japanese historical is to get ready for a different kind of journey...J historical can't be viewed as C or K historical
As for the suggestion, I haven't seen the drama you listed above except Nobunaga Concerto....so I don't know if this will do any good to you
Seirei no Moribito (consist of 3 short seasons) - this is the only Japanese historical that I know featuring a totally fictional backdrop and more easy to relate....in here there are 3 fictional kingdoms and it also has fictional social role like shaman (which never existed in typical J-historical)
Jin (2 seasons of short episodes) - you must have heard about this time travel drama....but it's around 19th century so some modern tech will appear in this
Mi wo Tsukushi Ryouricho - story about common people though...there are several adaptations, but the one that I've watched and liked was Kuroki Haru version
Tsuma wa Kunoichi (2 seasons) - for some reason I like this drama LoL..it's about a weak husband married to a ninja wife....yup, it's cliched but nice to see some ninja actions
Nobunaga no Chef (2 seasons) - time travel and meet Nobunaga and become his chef....I don't like it though...similar vibe with Ashi Girl (which I don't like too)
Hotarugusa - I haven't watched it yet but it's got some good review...it's my PTW
There are many that I have watched especially Taiga Drama but I don't think it's beginner friendly unless you really want to learn about Japanese history