I've checked different bread names: breadsticks, flatbread, oats, pita.. but none of them seems to fit.
These are usually very healthy - fat-free / lowfat, related to different diet recommendations.
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They are not common in the US, but we would most likely call them breakfast biscuits (or possibly breakfast cookies). Here is an example. You might also want to look up breakfast bars, energy bars, or granola bars.