The expensive mistake is the middle row sent as if it were the top one. A catalogue is marketing even when the buyer asked for it at the stand; it needs their opt-in to promotions, and it is priced as marketing. Swatch tracking and sample approvals are about something the buyer requested, so they go as utility templates.
The bottom row is the cheapest route of all: put a QR code on the stand that opens a WhatsApp chat with your number. A buyer who writes first opens the 24-hour window, and your reply needs no template.