I mentioned to Jens that I had seen a large list of the types of nib offered by Mabie Todd in years gone by. I had a search through my collection of Mabie Todd advertisements but no luck. I did find this one. Interesting, but it doesn’t show nearly as many as the one I had seen.
Note that in those days nibs were known as points. There’s at least one contributor to the pen groups who insists upon still referring to them as points. I feel that’s a bit affected. After all, many things have points but only pens have nibs.
Paul Leclerc has pointed me in the direction of a small 1951 nib chart on page 278 of The Swan Pen by Stephen Hull. It adds Eternal, Callighraph, Philatelic and Shorthand.