What's being built in Publishing, and what it's missing. Not a company directory: projects with concrete slots, published by the people who have them.
Publishing stopped being hard; distributing has not. The print run is sleeping capital and the bookshop decides what gets seen, so what gets looked for here is usually a channel of one's own and a way to sell before printing.
Looking…
If you're building something in Publishing, publishing your card is free and puts you here: the slot is what gets shared, not the win.
There aren't enough cards in Publishing yet to say what it's missing. This number builds itself as people publish.