Web Scraping, Data Mining Names and Email

There are 20 companies in the Direct Selling/Multi-level Marketing industry in the US, and I'd like to identify a list of everyone that works there, by name and email address. This is a data mining/ web scraping job, as there will be so many names - maybe 1 million. These people will be highly visible as the whole direct selling market is now based on social media selling and the individuals being very open with their contact details on facebook, linked in, and on their personal web pages they can create through the companies auto website generator. I'd like to start with 5000 people per company, for each of the 20 companies, so 100,000 names and email addresses to begin with. These will be recorded in excel with the fields "first name, last name, company, title, email address." Things like "State" or "City" can be optional. These people will definitely be listed on facebook working at these companies, and they'll probably be listed on LinkedIn too. I'm not looking for company executives like President, Marketing, Accounting, IT, Technology, CEO, COO, Operations. What I'm looking for are the "Brand Partners, Associates, Consultants and so on. The people who are in the field doing the direct sales. The companies are: Amway Avon Amore Pacific Mary Kay Advocare ARIIX Evolv Health Jeunesse Global Mannatech Modere Nerium International Nu Skin Nucerity International Plexus Worldwide QSciences Rain International SoZo Global Talk Fusion Trevo Younique