Big mistake in your analysis there, why are you only looking at MK-4 and MK-7?
The larger the MK #, the more durable and impactful in the bloodstream. A smaller amount of MK-10 can be far more beneficial than a larger amount of MK-4.
Cheese is an especially interesting source of K2 precisely because it contains the higher MKs. Many sources of K2 do not.
There are no studies of consequence on the others you mention.