So, I’m not going to argue much with @YOHANS on this topic. He’s probably forgotten more than I know about yoyo history.
That said, I think this is a cool list with logic behind it, but I also don’t think that it is so much so that a completely different list couldn’t be just as easily justified. Was the SKF really more important to yoyoing than the take-apart ProYo or the bearing SB2? Does being “first” beat out being available for purchase by thousands of people? Did the fact that the GM came out of the box unresponsive really make that much of a difference as far as the progression of unresponsive yoyoing? Or did it just save throwers some time and hassle? What about the birth of unresponsive play by yoyos such as the Renegade and FH1? And speaking of the FH1, what about 2/3/4/5A yoyos? It could be argued that the Raider pushed 2A play further than any individual yoyo pushed 1A. And wasn’t @codinghorror’s favorite DV888 a sub-$50 yoyo before the Shutter? (okay, okay, that last one was mostly a joke).
Anyway, I don’t think there can ever be a 100% definitive list simply because there are too many ways to look at what “matters”. And like I said, I’m not really arguing with Hans. That guy knows what he’s talking about. I just enjoy discussions like this because it reminds us all of the deep history that this hobby has. And understanding what came before you is key to understanding where we are today, as far as I’m concerned.