SB:

That chart, while excellent, in no way indicates "made guys."

For instance under Tony Spilotro it lists Frank Rosenthal.

For reasons that should be obvious Rosenthal was never a made guy.

Relating back to your question as to how the Outfit could diminish so rapidly, almost everyone on that chart is dead.

For example, every single person in the top two rows of the chart is dead. Of those heading the charts below, only Lombardo is alive.

I don't recognize all of the lieutenants but all of those I recognize all except Marco D'Amico are dead, and he is not a made guy anyway, I've heard.

I can't read the soldiers names.