Build a niche company list with the right buyer at each

I sell [your product] and want to break into a niche that doesn't show up well in standard databases: [niche, e.g. regional credit unions in the Southeast, independent veterinary clinic groups]. Build me a list of [40] companies using open-web research — industry association directories, member lists, conference exhibitor pages, local business listings, and the companies' own sites. For each company, capture name, website, location, rough size, and one line on why they fit. Then identify the most likely buyer of [your product] there — a person if you can confirm one, otherwise the exact title to target — with your source linked. Create a new Google Sheet for the results. No guessed emails and no stale entries: if a company looks defunct or acquired, leave it out. Tell me the final count and which sources were richest.