The spike from 0% will be far greater because your body will get to the directly available energy from the carbohydrate in yoghurt much faster when fat is taken out.
You can decide which is better based on the impact it has on your body. Let’s look at the impact 0% vs 5% is likely to have.
The spike from 0% will be far greater because it’s a food that is made up of protein and carbohydrate.Your body will get to the direct energy in the carbohydrate much faster when fat is taken out.
In the 5% yogurt, the rate of absorption is different because of the fat. Your body has to work on that fat and it reduces the spike in blood sugar, which means you’re less likely to have as much insulin released to store that energy.
You’re right about satiety too - 5% is likely to keep you feeling fuller for longer because of ‘gastric motility’ - it’s going to move through your system a little slower than 0%, because of the fat.