Off the top of my head, for my school and style:
Shihan - master instructor (Gokudan and higher)
Sempai - senior student up through Nidan
Sensei - Sandan and higher
Soke - originator of style
Though quite commonly 'soke' has come to mean "self-promoted scam artist". There are actually very few real soke out there - I'd hazard a guess and say that 99% of them are just some dude who decided it was a good way to make money after getting promoted to Sandan and moving out of the locale of his old teacher.
Harvey Moul
“Fish and visitors stink after three days - Ben Franklin”