Mijo, I am not sure what bone you are picking with Geoff, but the very same Shure publication you cited has a section on static. There you will find some real experimental results, some of them showing that friction between stylus and vinyl is NOT a significant cause of static electric charge on LPs. The mere act of removing an LP from its sleeve is much more to blame. As is “us”, the shoes we wear, the carpets we walk on, etc. The Shure article mentions use of electrically conductive vinyl as a preventive measure, but few LPs are made from such material; I think RCA Dynagroove may have been conductive. Also, when you discharge the surface of an LP you are about to play, that charge is merely shifted to the down-side of the LP. When you then remove the LP from the platter mat, the crackling sound that can be heard is the charge re-distributing itself over both surfaces.
Shure incorporated a brush into some versions of the V15 that removed static ahead of the path of the stylus; that’s why I suggest that the reason for the OP’s finding with two different cartridges might have something to do with how they are constructed, whether there is a path from the cartridge into the tonearm to drain static charge, etc.
