I am sorry I cannot be of much help as I am experimenting with different foods at the moment.
If I don't eat breakfast then my blood sugar rises 1 to 2 points an hour and a half to 2hours later. If I have coffee and cream, or just cashew nuts for my breakfast then an hour an half to 2 hours later, it has risen by about 1 point or more.
But because I get up really early anyway, my dinner time is probably most people's breakfast time. This is usually just a protein meal eg eggs and bacon, and my reading goes down another maybe 2 points, it depends what my starting point in the day was.
But I am experimenting with some Polish breads at the moment. And for my dinner now I am having fried eggs on this Polish bread. And my reading still goes down about two points or a bit less.
The Polish bread is some kind of Ezekiel bread.
But if like this morning, I did some gardening after my nuts but before the eggs and Ezekiel bread, my reading went up just over a point.
This is probably no help at all...