Being retired and having virtually nothing to do, I decided to find as many "fly tying" hook brands.
After an exhaustive 2-3 hour search on the internet trying to find as many hook brands as I could find, I managed to create the following list (most likely incomplete). I tried to find as many "freshwater" brand of hooks. Of course some brands contain "saltwater" hooks, one brand contained only 1 "freshwater" hook, some brands I have never heard of but most of them I have. Some are "fly shop" brands and some are personal brands. Some are offshoots of popular major brands. I did not list brands that only made treble hook for salmon etc.
So here is the list of the brands I found
European Barbless Hook
Fly Tying Boutique
Green Caddis Outfitters
Hook and Hackle
Syndicate Comp Hooks
The Fly Shop
White River Fly Shop
If anybody knows of other brands please post them in a comment and I'll add them to this list.