I'm like Camilo . I thought all SPD pedals had float. I've never seen the angle of float published for a SPD pedal, but I have not looked for it either.

You should be certain that your perceived needs can't be dealt with better by just adjusting the angle of the cleat on your shoe to make your toe point in a direction that is neutral for your knee and doesn't cause it to bind. Too much float is usually considered a bad thing.

Welcome to BF!