Ming is by far the biggest name in her country due to her rising popularity. Liu's pretty much an all time famous model. She probably doesn't have as much followers compared to Ming, but she's out there, established and most importantly, her followers are mostly organic
Fei Fei Sun has pretty much faded in to name that only HF aficionados and fans would know while Sui is mostly known for her work with VS these days, because she's gone down the commercial path for modelling.