You don’t need a nuclear magnetic resonance test (NMR) to know that your LDL will fall into the “unhealthy” Pattern B, because your ratio of triglycerides to HDL is too high (a very strong association). And even people who believe that cholesterol actually causes cardiovascular disease (despite all the available evidence that it does not) have to admit that a low ratio associates with minimal cardiovascular risk.
A couple of other tests, which you might be able to persuade your physician to order, are a CIMT (coronary intima media thickness) test and a CAC (coronary arterial calcium) test, which are better measures of the actual state of your arteries and your risk of a coronary event.
The assumption, a carryover from the current conventional wisdom, is that fat in the diet results in fat gain. There is evidence to suggest that (a) this is not true on keto, because insulin is low, and (b) fatty-acid metabolism increases to handle both dietary fat and the release of excess stored fat. We know that the metabolism adjusts up and down to match the resources we give our body. Of course, this is within a broad range, only. The lower end of the range is death from starvation, and the upper end of the rang is energy (fat) storage. But the upper part of the range is wider than the conventional wisdom assumes.
Given that fat yields over twice the calories per gram than carbohydrate yields, it is much easier to be satisfied when eating fat. So the key is to listen to one’s body, and to stop eating when hunger is satisfied. Granted, at the beginning, doing this means eating a lot of food, and that scares people. But many of us have found our appetites suddenly dropping, several weeks into this way of eating.
There is actually a growing body of evidence showing the effects of a well-formulated ketogenic diet. There is actually surprisingly little equivalent evidence showing the effects of the recommended diet. This was known at the time, when the dietary guidelines were first promulgated, and a number of large, well-funded studies have actually shown that a low-fat, high-carbohydrate diet actually increases the risk of cardiovascular disease, but we never talk about that.