For the grinders out there,
as I want to buy some belts ready for my Grinder WIP and don't want to waste money on inadequate or incorrect belts.
I've but been digging around looking for the best Grinding belt types to use for razor grinding

I have found lots on grit progression etc, but not so much on what is the actual belt type preferred for each stage eg Norton blaze, 3m trizac, J-flex alumina oxide etc

E.G.
pre HT
eg roughing steel 40-60 grit by what type Norton Blaze or Aluminium oxide

Post HT
hollowing steel 120 grit- Norton blaze, 3m trizac, alumina oxide eg
polishing/finish grinding steel up to 2000 grit
maybe I have missed it on here or asked the searches the wrong way ??
any help is greatly appreciated

thanks
Dion