Koen de Winter
Prof. Paul Rothstein
I can be inspired by the work attributed to some of the other names, but I can't say I'm inspired by the designers. I don't know them or how they work. Therefore, my list is made up of people that I know to some degree, other than Louis Sullivan. I keep running across stories about Sullivan that inspire me, so I'll give him the credit for that.
"There is hardly anything in the world that some man cannot make a little worse and sell a little cheaper." - John Ruskin