Kodak Gold or Ultramax?
Gold/Ultramax only refers to speed right? So you have Gold 100/200 and Ultramax 400... right? EDIT: Wait, there's also Gold 400... what is the difference between Gold and Ultramax?
But then you have Lomography CN 800 as well. There isn't any Kodak brand consumer grade 800 speed film. It would have to be Fuji or something else.
Ultramax is the latest name for Gold. It's just a name and Kodak itself must have a product number instead. The iterations were marked in the edges as GC and 7 was the latest generation IIRC. Then the family is supposedly Kodacolor VR, or was in the 80s. But the current Lomo Kodacolor is not of course the same Kodacolor as 1980.
It's very plausible for all 100, 400 and 800 to be Kodak. Lomography is a big client and can do a contract coating of a Master roll. That through Kodak Alaris, a few years ago there was an announcement of their partnership.
PS: Kodak had Gold 100 and MAX 800 until 2013? There's also Some "pro" labelled Kodak film in select markets at ISO 100. Easily available for private labelling, perhaps Kodak itself doesn't want to market themselves.
Both the 100 and 400 are rather grainy (Compared to Portra and Ektar, but even Superia to my eyes), rather comparable to Fuji C200. Kodak Color Plus is another consumer product that is comparable.
Until a few years ago, Lomo CN was Ferrania and finished by Foma (120 had the same green-white-black backing paper signature). This single run of aged film was from that time. Nowadays Kodak coated and finished in 35mm "made in USA", to make matters funnier, the 120 says "made in China" - that could just be the finishing part of it as there are complaints on its strange backing paper. I still have to try it.
Downrating Color Negative is rather common practice and can be beneficial in some situations.