I have been in many congregations over the years. I remember the one elder that was young and so sure of himself and proceeded to insult and downgrade every older JW in the congregation. He was frightened and wanted to do a "good job."
But most fell into groups:
Brother Never Remembered He Had a Part Until He Walked in the Door
Brother Wife Always Writes his Talks
Brother Never Went Out With The Group/Disappeared Into the Distance
Brother Never Made a Decision Until He Knew What the PO and SO Were Going to Do
Brother Lobbyist (trying to get a consensus to support his view)
Brother Good Cop/Brother Bad Cop
and so on
Blondie