I also found that my fastest typing switch was Matias Quiet Clicks. Something about tactile but non-clicky Alps makes you type fast.
FWIW I type way faster on these than on dampened Alps.
I should note that some of my fastest typing switches aren't exactly my favourites, while I type very slowly on some of my favourite switches. These rank very high on both scales, although I still prefer blue Alps.
Buckling springs also rank pretty high on both scales, btw.