There could be many reasons there are small bass, small crappie and bluegill. Obviously the visibility affects performance of the 3 sight feeders you list but I could see another possibility here that "may" be taking place.. It is possible there is catfish present causing some or possibly a big part of the visibility issues.
CC or Bullhead, either one, can cause quite similar conditions in the right combinations as can koi/carp.
Just a thought and something you might try to confirm by bottom fishing worms, liver, etc..
It could possibly answer some of the questions you have and maybe add to suggestions for helping to manage this.

Last edited by Snipe; 08/30/19 12:55 AM.