Sweets are a lot of work!
"No sugar added" or "sugar free" baked goods are usually made with wheat flour and all of the other carbs found in conventional baked goods.
Fruits can be a big problem for a lot of us. Berries are often the best tolerated (but not always).
Almost all the yogurt I can find is low- or non-fat, which also contains lots of carbs. (You'd think fat is illegal in the Bay Area. Someday, it just might be.)
Unfair but true: for some of us, certain sweeteners can spike just like sugar. Some sweeteners I once used without a problem started spiking me. Fortunately, I'd seen other Forum folk report this issue, so I started re-testing. Oops.
Testing is essential, and should be repeated periodically.