Post prandial Spike after Meal

Hi and welcome. You're using mg/dl values, which are not used much in the UK, so to translate:

140 mg/dl = 7.8 mmol/l
180 = 10
200 = 11.1

I don't like using the term "spike" in relation to a normal and expected rise in blood glucose after eating carbs. My favourite personal example is that a small milky coffee will take me from 5.2 to 9.6 after 40 minutes, and back to 5.2 after an hour. That's not a spike, it's only to be expected from the lactose in the milk. It's why the +2 hour reading is most important, as it shows you how well your system works at clearing excess glucose, which is key information.

It's not really possible to give you a straight answer. It depends on you, and on what you ate, and probably on several other factors as well. If you ate a very large amount of carb/sugar, you'd expect to see a commensurate rise in blood glucose. If you're clearing that by the two hour point, it shows that your insulin response system at present is currently handling that sort of carb load.

The issue for those of us with this sort of metabolic problem is that at one point we all could handle the carb load. I followed the still-current high carb "healthy" eating advice and developed T2, probably from overloading my system and developing insulin resistance. Removing the carb load through my present way of eating has corrected that, at the time of writing.

It might be useful to look at daily CGM graphs from non-diabetic people. BG levels rise and fall in response to food and all sorts of things. You'll find lots on the internet, and there's a research paper here which is informative.