It always amazes me that some people seem to think in terms of these claimed groupings as though the league was made up not of 20 self-contained and frankly self-interested entities but instead two blocs, for all the world like the Eastern bloc and the Western bloc during the cold war days.
There are certain issues on which City's interest are akin to Newcastle's. On others, they are not. They have made common cause with United about (for instance, IIRC) the squad cost ratio suggestions, but were on diametrically opposed sides during the APT votes. Villa and Forest take the same view as City where it suits their interests to do so, not when it doesn't. Equally, the idea that every one of the US owned clubs has exactly the same agenda and exactly the some priorities and will therefore vote in exactly the same way on every single issue seems to me to be obvious nonsense.
Likewise all 20 of the clubs in the league.
I sometimes wonder, as an aside, why it was that clubs like Brighton and Brentford took the side of the history clubs on the APT issue, but doubtless they will have had their own reasons for doing so.