All of this is complete BS and just marketing play, including all the rhetoric the current government spreads. How would I know? I have just started running a dairy farm and have been in the field for last 5 years.
It's not the breed of the cow, but it's diet that would give medicinal properties to milk and it's by-products.
Earlier, people used to leave their cows to graze, which would allow them to eat different kind of herbs. Now, no one does and there are very few grazing grounds where such herbs can be found. So it doesn't matter if it is a Gir/Sahiwal or a Jersey/HF. If you are going to feed them the same materials, their milk would be same apart from the differences due to genetic traits. That difference only manifests in terms of protein and fat percentages. On top of that, all cows in India, whether hybrid or desi, produce A2 milk. This has been proven in an NBAGR study, which says that even after crossing an A1 cow with A2, the hybrid which is known as A1A2 type, predominantly produces A2 protein. Also, due to all this hoopla, most of the foreign semen available these days is also of A2 type. Yes, contrary to popular belief, even foreign breeds are of A2 type. Also, all this A1 and A2 BS is propagated by a foreign organization, based out of New Zealand known as the A2 corporation so they promoted and sold A2 milk without owning any of our desi cows.
Lastly, your comment about how Ghee is made or should be made is also wrong. After removing the cream from the milk, there are two ways. One can just boil the cream straightaway, but no knowledgeable person does that, because that leads to fat losses. You make curd out of the cream, instead of milk, and then make butter out of that and then heat it to turn it into Ghee. The quality of Ghee made this way is same as that made from the method you mentioned, but benefit is that there is less buttermilk to sell while the milk left after cream separation is sold off as skimmed milk. I see people following certain instructions without any logic including using cow dung cakes to heat the butter into Ghee, calling it the Vedic method and not considering that we have better fuel sources available today and that is not Vedic method, but those people were just using what fuel sources they had.
As for OP, you will find just using Ghee to be very expensive, even if you were to use products sold by mass market companies. You should actually use all sources in rotation including refined oils. I don't even have to buy Ghee but I still won't use it for cooking everything. As for sourcing, best bet would be to make Ghee at home, from milk bought from a trusted source, usually a small dairy farmer like me, in your vicinity. That would cost you around 1250 bucks a litre assuming you buy milk for 50/l. In a few months, I would start selling Ghee for the same amount as well.