Some recent examples, West World Season 4 (HBO Max), Raised by Wolves (HBO Max) and The Expanse Season 4 (Prime) came to K before any disc release where the first two still isn’t yet announced for disc media yet. Having said that, there is a ton of other TV shows missing from the store. From the track record, anything HBO will likely make it to the store sooner or later. It is very difficult to predict for others.
In general, any recent mega mainstream, drama, chick flicks, and kids content are heavily over represented in the store, whereas foreign, art-house, sci-fi (unless you consider marvel sci-fi) are under represented. I am learning something new everyday. Maybe because I am an enthusiastic engineer. For me Kaleidescape is a technology product. I would think sci-fi, horror, action and cult (you can include art-house in here) titles have higher sales. Now I realize Kaleidescape is more of a convenience product than a technology product (not a criticism).