First... it's really difficult to discern without a much larger image. At this size, all anyone can really analyze is the "shape." They could all be slowly drawn and it'd be hard to tell from this size image.
That said, I agree the Ryan and Gooden look odd. The Carlton looks a little off to me as well.
But, some of them look ok from what we can see here.
It would seem almost beyond belief to me that someone would ruin a legit Drysdale (and other) signatures by faking common, easy to obtain signers. But I guess stranger things have happened.
