There are various unofficial rankings. In a recent letter leaked by Atlantis elders who were designated "able to handle complex matters" or some such term were to be listed by the CO. Obviously they would be used for appeal committees, special committees, etc. These often are the same ones chosen for parts on the circuit assemblies and regional meetings too. They have more status than regular elders who cannot "handle complex matters."
Many large cities have one bro. designated as "city overseer." It's played down officially and he's really there to help out with assemblies and conventions, but I knew one well and he was called upon all the time by HQ when special needs arose. The point is that when he spoke out as just a regular elder, everyone knew he was more than that: "Bro. Smith is the city overseer." "Oh, really!" "Yeah." "Oh, I've got meet him!"
If you hang out in different congs or travel around visiting them, you see certain ex-missionaries, ex-COs, past Bethelites, and current or past special pioneers, and these ones have more status/stature/standing than regular members do.
Finally, "the anointed" receive quite exceptional status, with a real aura surrounding them. It used to be more so when there were those who went back to Russell's or Rutherford's time, but they're pretty much gone now. I'm not quite sure today how those who claim to be among the elect are viewed since there's so much doubt cast upon their really having validity as anointed, but among non-claiming cong. members those who buy into their claim, they will be on a huge pedestal.
Hope this helps.
