What I recall from looking into this is that under half of the states had stay at home orders with the force of law. My own perspective was similar to yours - governor issued a "stay at home order" that when you read the details it was really just a strongly worded suggestion. Of course my state was still often listed in national summaries as if the order was mandatory.

But there does seem to be states where such orders were legally mandatory. Were they enforced? Would they survive court scrutiny if someone was arrested for say walking down the sidewalk in open air? Did they have massive escape hatches (eg caring for family members) ? No idea.