Well to answer you Michael C, in owning about 400 lenses, knowing what company made a particular lens should have 'everything' to do with how said lens will be used photographically.
Your comments seem to indicate a belief that all lenses make images the look the same.
However, since every lens ever made has it's own unique look, I can't understand why a serious photographer would not want to pick what lens to use to fit the photographic situation. And the most basic way to understand each lens look is to understand lenses by each manufacturer/seller and then also sub understand each of the particular lenses they sold.
The only way to do that with lenses sold by Soligor is to know all these codes so you can gain an understanding of who actually manufactured each Soligor lens. You would want to know that about Soligor lenses because lenses manufactured by Sun, Tokina, Komine, Kino, Komura, Tamron, etc .. all produced different looking images from each other.
You wouldn't want to arbitrarily pick a lens that has high contrast if you need a lower contrast lens to help control a particularly high contrast scene. Nor would you want to choose a lens that had very cool tone coatings if you are looking for warm tones in your image.
Each lens manufactured is different from every other. However manufactures tend to have tendencies that they stick to, at least grouped by time periods. The only way you can really understand what your lens is prone to impart in your image is to understand the different nuances of lens manufacturers. Serial numbers and prefix codes such as this chart are crucial in that understanding.
Respectfully yours ...