Yes, thank you! And yeah, it would be great to have a permanent list maintained. So... these 2-button games, when you choose that feature, is that stupid 'up' to jump function disabled or is it still there? I remember some games, even though they might have taken advantage of a second button, you could still accidentally jump by moving the joystick even up-diagonal 
I remember using up to jump in Turrican with my one-button joystick. I had to get a special microswitch joystick so it would be precise enough that I could jump precisely. Then I'd have to reach over to the keyboard to take advantage of the bombs and power-lines and other stuff that my joystick couldn't access with its one button.
In the arcade I didn't like playing Street Fighter 2 because it had 6 buttons but only 4 fingers and one thumb to press them with. At home it was even worse: One button joystick. I think I still have SF2 for the Amiga but there's really no point in playing it.
