I am not trying to insult anyone but let me share my 31 years of mechanical engineering/shop hands on machine tool building experience.
When a block or head is machined either by milling with a CBN fly cutter or machined on a grinder, if the head of the machine is in perfect tram ( perpendicular to the machining surface) you would see a cross hatch pattern where the cutter or grinding wheel cuts both when it enters and leaves the surface being machined.
If you look at the pictures, what shows up pretty clearly, is a single spiral arc it would indicate that the head of the machine was not in tram which will cause the surface of what ever you are machining to be dished. How much that dish is depends on how far out of tram the machine head is.
Also, Cometics and/or FelPro I believe require a max of a Ra 50 surface finish, in which case you should NOT see any spiral tool marks, instead you should have a very smooth uniform surface.
If you look at past thread on here, head gasket failure is way too common. Biggest problem I see is most engine machine shops do not have the equipment to machine or check a block deck, or cylinder head surface to the requirements that today’s MSL type of head gaskets requirements.
I carry a very large spoon,, how else will I stir the pot?