Some spark plug resistance numbers taken on a few of my plugs. All are in ohms
Autolite AL605 - 5410
Autolite AL104 - 7410
NGK TR6IX Iridium - 4430
Nology Silver Racing G4YS/ Brisk G14YS - .5
Brisk GOR14LGS-T - 3870
What I found so surprising was the resistance in the Autolite plugs. The Nology is the same as the Brisk Silver Racing plug with the same part number. The other thing strange is the Brisk cap. It is made of an odd metal and is very hard to get a reading off of. Could be a specialized coating.