I dont watch all these guys play but from what I can tell basically you have:
1 guy who has been really good: Wemby (even he was only 3-10 last night)
A few guys have been good and fans are probably happy with: Cam, Amen, Bilal
One guy has been really mid/average: Brandon Miller
Then the rest, guys like Black, wallace, walker, bufkin, JHS, scoot, Howard, dick, hawkins, ausar etc, have been below expectations or just plain bad. A few flashes from a few of these guys but mostly garbage.
Also, most of these guys didn't have an injury in the off season and had more time to practice with their teammates, got to play in summer league, and dont have a roster stacked with dudes who are bonafide playing their same position.