I saw that list!
I’m not sure I’d want to sign up to maintain a list of distributors including small-goods- and saddle-focused ones. There are just too many, they come and go, and a lot of them carry a lot of the same products.
I do think it’s worth it to me personally to track specialist shoe findings distributors, since there aren’t that many and they tend to carry things the leathercraft shops don’t. And to point out distributors for particular suppliers, like who distributes a particular sole tannery’s leather.
Other folks might be inspired to keep up other lists. They’re more than welcome to do that here on the forum, or share links here on the forum to resources elsewhere.