Frank
It is really great hearing from you. And, you described the Koufax story very well. I am somewhat older than you, and I saw him pitch when he started in Brooklyn.
Then, I followed him during the LA years because I had a feeling he would be great. His style of wind-up was impressive, quite compact and very effective.
However, the two Lefty's that haven't gotten any "play" in this entire thread are Eddie Plank and Lefty Gomez. I'm not that old that I have seen Plank play

But, I have read a lot about him....and, he is my man on the mound in any given season.
Lefty Gomez..I can say a lot about him; however, I leave you with this: I will place him above any other Southpaw when it's time for World Series play. I dare
anyone here to argue against Lefty's
6 - 0 W.S. record.
Changing Pitching styles....some one here mentioned Smoky Joe Wood. Last Summer we visited friends in Milford (Northeastern Pennsylvania), and I ran into
Smoky Joe Wood's Grandson. We had a great conversation, and I could sense that Wood's family cannot understand why Smoky Joe is not in the HOF.
His stats are as good (if not better) than pitchers currently in the HOF. Most notably his 1912 W.S. W-L
3 -1 record.
TED Z
T206 Reference
.