These are dramas that have at least the leads recording their own voices but they are also romantic historical dramas that I really enjoy and totally recommend.
Story of Ming Lan - The main cast all redub their own voices. It's a realistic historical romance too. I didn't know it was dubbed the first time I watched it, the actors and technical team do a really good job in this one.
Ashes of Love - There is dubbing in this one with voice actors however, the main three Yang Zi (she usually uses her own voice in most of her drama), Deng Lun, and Luo Yunxi record their own voices.
Royal Nirvana - The leads record their own voices, not sure about the rest of the cast.
When We Were Young (2018) - Not a historical, but a nostalgic school romance drama where I believe most of the cast do their own voices.