Groceries left out on the counter
It's all still safe, given that it was only an hour. Even very perishable food like fish and meat is safe for 2-4 hours in the danger zone (above 40F/5C), so even if it had fully thawed it'd be okay. If it was all still clearly frozen on the surface, you have absolutely nothing to worry about.

If some of it was thawed on the surface, it's still okay, but note that the time limit in the danger zone is cumulative. So in that case, when you do use it, I'd be sure to avoid letting it sit out thawed before cooking, or after cooking. But it would all still be fine.

All you really have to worry about here is quality. If things thawed significantly, and then you refreeze them, the texture will suffer. Things are likely to get mushier, especially vegetables. They'll still be safe, just not as good. So if anything seems to have thawed, I'd try to use it immediately instead of refreezing.