Glad you appreciate the old documentation. The illustrations / fly renditions which accompany this particular article are not the best quality. They are from 1882, and there were good bend and hook size plates prior to that year, and some high-quality color illustrations to follow.
Someone who is an authority on hooks can give you a much better answer. I can say that a variety of hooks were commonly used in period flies. There are many examples from old kits. (See Stuart's kits pictured on-line.) J. Harrington Keene's Practical Fisherman had come out in 1881, and he was capitalizing / promoting in the papers of the day. He gave six bends: Round, Kirby, Limerick, Sneck, Kendal and Sproat, as well as an illustration of the sizes of hooks. The 1876 edition of Francis' Book on Angling gives salmon bends as Limerick, Round or Carlisle, Sneck and Kirby. All were used for salmon flies, despite being subject to the limitations suggested of the bends by various authors, i.e. weakness, overly long shanks, "pouty" or off-angle points, etc. Interesting items to read! Re Aberdeens versus Carlisles/Rounds, there were variations on gape, shank length, hardening and finish. Both were used for salmon.
When I have a little more time, I'll post the pages that I referenced above.