What is the correct way of labeling artifact armor?

[Pellegri]

I call leveling af gear "af", current myth gear "af+1" or "af1", and then when they release 2.2 and the armor they showed off for it i'll call it "af+2" or "af2" because lol at thinking that armor will be anything more than the new myth gear.

[Seaverin]

I dunno who came up with these complex label, but the way i see it is the lvl 45 ones are PRE-AF coz of the lvl differences in each of them with the body being only lvl 50. The i90 ones are the real AF (true AF), and the allaghan are a different type of set but they shouldn't be called AF. There shouldn't be any AF+1 or +2, its only AF2, AF3. This how it we label it in FFXI.