I'm just seeing this now; thanks for updating us.
I would say that it makes sense that you are doing better with the A2.
The incorrectly structured casein protein in A1 milk is the cause of most dairy allergies (immune response.) As far as dairy intolerance (digestive issue,) I know that a lot of people think they are intolerant to lactose (sugar molecule) when it is actually the casein (protein molecule) that their body struggles to correctly break down.
This is discovered when they switch to A2 milk and are relieved of symptoms that they previously blamed on lactose.
However, lactose intolerance is still very real for many and I don't know that any study has really ever put the two issues side by side to see which is more common.
Where exactly do you live? I am in the US and travel for work. I have found a couple brands of non-homogenized A2 milk in different areas. They are a mix of raw vs pasteurized, but are still non-homogenized.
RAW FARM brand dairy. They are raw and non-homogenized. They also are 'grass grazed' so while not 100% grass fed, that is still decent. I have found them mostly in Sprout's Markets but are often in small health food stores as well.
https://rawfarmusa.com/find
Alexandre brand dairy. This brand has several options, all of which are A2 cream-top. So they aren't raw, but they are non-homogenized. They have varying fat options (2%, 4%, 6%) as well as a 100% grass-fed option.
I usually see these in Whole Foods, but they're branching out to more national stores as well as small health food stores.
https://alexandrefamilyfarm.com/pages/store-locator
You can also use this national search engine that will show farms across the country. Its not updated very well, so call before you start a trip out somewhere because some of the farms close down or change offerings without the site knowing.
https://www.realmilk.com/raw-milk-finder/