I've only watched a few Cdramas but Wang Kai definitely has to be one of my favorites. Also Zhang Vin and Mark Chao.

Zhang Ruo Yun, Lau Hawick and Ma Tian Yu.

Baron Chen
Hu Ge
Zhang Bin Bin
William Chan
Wallace Huo
Vanness Wu
Jin Han
Joe Chen
Blue Lan
Hou Ming Hao

Zhang Ruo Yun
Liu Ye
Wang Kai
Chen Kun
Qin Hao

One of my favorites is Yang Yang. He looks down to earth. I love his drama Love O2O. It grows my love for gaming (and my most fav minecraft from apknite)

Yang Yang, George Hu and Han Zhang

Chen Kun, Deng Lun,  Xun Zhou

Show Luo (I was his crazy fan back then) 

Liu Hao Ran (recent fave) 

Deng Lun

Xing Zhao Lin

Shen Yue 

Liang Jie

Yangzi

Peng xiao ran

there's so many more lol but I'll stop here

Yang Yang

Darren Chen

Ceaser Wu