I was going to make a list but I realized something.
Have you ever tried to expand your horizon on hentai before?
I think it is best to discover new authors by yourself (at least in a trial and error fashion).
At least don't do like me and don't buy a book blindly to be disappointed in the content, keep your money for what's worth.
I can at least give you a list of some of my favourite artists, when it comes to style (excluding FAKKU releases, or else the list would be expanded)
Yamatogawa
Takasugi Kou
Seishin Izayoi
Amazume Ryuta
Wakoh Onna
among many others.