Jon, I have made some like the second one in your list. Each size having 2 examples, one with the nut holder fixed and the other with a round and knurled outer surface. The first holds the nut stationary and expects that the bolt can be turned into the nut. The second is free to rotate and can be turned by a thumb, this is useful when the bolt/stud is fixed and you need to wind the nut on.
I have these in 8, 10, 13 and 17 mm which are my most used sizes.
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