The answer to this question is that some designers were able to make paperweights as well as designing them but others were simply designers. For example, Allan Scott designed many paperweights and made the lampwork for these but he did not actually make the paperweights, the same applied to Linda Campbell. Margot Thompson would design weights only whereas Helen McDonald would design and engrave weights. Whilst some paperweights were designed by glassmakers who can then make these weights the number is relatively small, the only way to get a 1005 picture is to list every designer you can find and go through them one by one.
Hope this helps
Dave