Yeah, but I mean if you don't DIY there's no way you can tell these things. If you do, then you just vape plain PG - 0 throat hit, then PG + flavors - 0 throat hit, etc... If you miscalculate nic concentration once, you feel what "killer throat hit" means and you don't do it again, and so forth...
With pre-made juices it is relative as you have no idea what they put in the juice. Boba's is 100% VG and yet has a solid throat hit, right?
I'm not a tobacco fan, but I think I might try Bobas. I never had it so I don't know what the TH is like. I have heard that their juice is thinner than most 100%VG juices, so I'm assuming they put something other than VG, nic and flavoring in it. OR, their flavoring isn't so concentrated and they use more of it, thereby thinning the otherwise thicker juice. I know that if I make 100%VG juice, it's thick as molasses, but if I thin it with alcohol, it has plenty of throat hit.
I just didn't want anyone to be left with the impression that PG cause throat hit and if they order 18mg with 100% PG, it'll have more throat hit than 24mg with 20% VG. Or, if they add PG to their juice, it'll increase the TH.