Its certainly possible those high levels of fat in that meal had something to do with a lower spike (but you are right, they continued to fall after 1 hr, not rise any further, so it wasn’t really a delay). In the kind of “crazy” meal, the fat levels were certainly higher, but so were the carb levels, proportionately. In the two meals where I had sweet potatoes, were talking about 30 or so grams of carbs, and fat and protein grams in the mid 20s.
Mostly my blog was just an attempt to comment on the nature of individual factors, and their variable impact on people with diabetes. It was also tied into the commentary that I was reevaluting my diabetes at that point because of previous indications that I might be a 1.5. So low insulin levels for me and high spikes with certain meals, were not an indication that I had 1.5, but that being an athlete (low fasting insulin) and eating sweet potatoes (glucose spike) were what led me to those glucose readings.
Like with a lot of things, but especially with diabetes, it seems like the more you learn, the less you know!