With due respect to TyroPicard, the actual speed range for the Categories is dependent on how each State has implemented Pans Ops. For instance, I have an idea that the UK uses a maximum IAS somewhere around 180 or 185 knots for initial approach. In PNG, categories A/B are restricted to 170 KIAS and categories C/D to 200 KIAS.
I think that Jeppesen documents spell out all the implementation differences, but I don't know other such organisations.