There are thousands of recruiters across the country and with different specialties. Some work alone, others work in small groups and others are members of large national organizations. Which type you choose depends on the type of job search you’re in. Recruiters are paid by hiring companies to find the best possible match for the job. They handle the marketing of the job posting as well as the collecting of job seeker data and hopefully make a match. Sometimes this match happens between two different recruiters. This is called a split placement. The fee is then split between the recruiters.
As a jobseeker you want to find a recruiter in your field who will help you to best find a job that meets your own requirements. If you have come this far, it means that you have specific needs that need to be met in your new careers. A recruiter will help you to meet those needs.
You should look for someone focused on making placements, not filling orders: they should want to help you rather than make a quick placement for a company that is paying them.