The phrase "upper echelons" refers to the highest levels or ranks in an organization or society. It represents the people who hold the most power, authority, or influence within that particular group. Full definition
Worked consistent 40 hour weeks as part of upper echelon of sales achievers granted permanent, full time employment status. (resume-now.com)
Increased attention to the issue of heroin abuse has focused on traditional concerns such as enforcement of drug sales and strengthening penalties, especially for upper echelon dealers. (nystateofpolitics.com)
They're commonplace throughout most of South Korea and run the gamut from upper echelon status to your local - tourist - designated spots. (mindbodygreen.com)