Uncle Samsik if you want a challenge (it's a fantastic drama, but better if you're versed in Korean history - which I'm not, and fine with taking notes/ googling. Certainly one I'd rewatch)
Advisor's Alliance/ Growling Tiger, Hidden Dragon
The Long River
Story of Yanxi Palace (ok you said no bitchy women in a harem but I'll suggest it anyway lol - partially because it's excellent, and also I've never seen a FL like that one. She's amazing)
Marvellous Women
Nirvana in Fire, Ming Dynasty in 1566, Three Kingdoms, and Shogun - all have been suggested, all are excellent and worth checking out.
Joy of Life...ish! Can't say why without spoilers but also excellent
The Ingenious One
Under the Queen's Umbrella
War of Faith
Bangkok Blossom (uncomfortable to watch at times but very interesting and unique).
Rise of Phoenixes