I tried to do the ohm test and got 1.2 on one and then some weird readings on the other 2. So I pulled them and hooked them to a 12 volt and they started glowing red. I also get 12 volts at each one when the glow plug light is on. So I think they are working although I couldn't get a good ohm reading
Pretty normal for most diesels, among 5 I've owned. The other 2: Isuzu diesel generator and VW TDI are exceptions. Neither of these ever chugged. Never know they are diesels.
It does sound like your glow plugs are working. I don't have an answer for you but still do not believe your video shows a normal crank in a heated garage. I can crank my CT235 at 32f after warming glow plugs and it will crank first turn without any display similar to your video.