Sora Chan

You forget about Signal XD (japan remake from kdrama with the same name) played by Kazuki Kitamura , about a young moderen detective who can contact other detective in 1980 with Walkie talkie they work together to solve a Cold case/unsolved case

I also found Todome no pararell a man that can Revive & back in time by a kiss (Idk its include time travel or not ????)

I think eric wang its not the main lead the main lead is a guy who playing as Ya Ca Su in Huang Fei Hong 2017 ( a guy who bring giant tooth brush) i know his face he have Long face

I still have 1
A new drama the title is
Legend of Huo Buo 2019 (played by ariel lin&vin zhang)

The plot is a man&woman from modern time who travel to the past the woman become beggars and the man become a nobleman

Yeah but step into the past have 2 version HK (2001) and china (2017)

I dont know this is include time travel category or not but i remember some drama like that

Like as
Wu Chengen and The Journey (the novelist who making JTTW and he dream become sun wukong

Ice fantasty 2 prequel from ice fantasy who take time in the future or moderen time

I know some that i remember
1.step into the past 2001 & 2017 (base on novel)
2.Three kingdom RPG (Hongkong comedy drama)
3.The Legends of Monkey King
(The story about a man from moderen time who travel back as Sun wukong from journey to the west) 2018
4. Kun lun que (A man from the past who travel to moderen world for looking his brother rencarnation)

Maybe i still have some that i forget