You can see all of the collected hubs in this gallery. They are listed here chronologically by name and time period. Basically these are hubs of the four large international hub manufacturers Fichtel & Sachs, Sram, Sturmey-Archer and Shimano. There are - and there were - some other manufacturers as well like Bendix, BSA, etc. It seems impossible to collect all worldwide hubs, the air gets thin with hubs older than 1930.