City will have tickets on one end and and on one side.
Because they only sell you the category of ticket and not a specific seat, they don't decide how it is all split up until all the tickets are sold and allocated to people.
In your UEFA account, you specify which team you support. So whether you buy a corporate package off them, get it via a sponsor, or are successful in the ballot, you should be grouped with other City (or Inter) fans if you picked one of those teams. And in turn your group should be placed near other City (or Inter) fans as appropriate. UEFA don't know this mix in advance.
It could be that the end where City's cat 3 and cat 4 tickets are, also has Inter fans in certain blocks and vice versa. It all depends on who those UEFA tickets get to.
We have no idea how many of the 20 000 City tickets are in each category or how many of the 7000 ballot tickets are in each category .
Oh and because the stadium map is so vague some seats can change category if they want to massage the border between each category, so you could get a theoretically worse or better seat than the one you paid for.
So if Ceferin wants to stick 50 of his mates in the best seats at the last minute, some cat 1 seats can be moved to cat 2 on the edge of cat 1, and so on.
You should find out what seat you have on Thursday 8th June, but at Porto mine wasn't allocated until 4 hours before Kick Off, and I'm certain we were moved at the last minute.