As far as I remember, the classical grades (In the UK there are 8 not 9) were classified as:
Grade 1 = Beginner
Grade 2 = Elementary
Grade 3 = Can't remember
Grade 4 = Lower
Grade 5 = Higher
Grade 6 = Intermediate
Grade 7 = Advanced
Grade 8 = Final
I had a look at the website of the main exam org in the UK (and commonwealth countries) which is
'The Associated Board of the Royal schools of Music' (ABRSM) but they don't seem to use those names now as far as I can see. (I stopped teaching classical grades about 20 years ago).
All the exam requirements are there, though, for all the grades - if anyone can be bothered reading through them and trying to match classical levels to fingerstyle to try and grade Kirk's fingerstyle lessons.
Personally, I think just two are needed for our purposes:
Beginner and
Beyond.