Which is the strongest lacing pattern for 32 and 36 spokes
3x is the standard lacing pattern, because it is strongest. Radially spoked wheel will be slightly lighter and stiffer but can not handle torque at all.

There are two reasons why 3x is strongest for 32 and 36h: First, the spokes are connected to the hub tangentially, so braking and pedaling forces go directly to spoke tension without any sideways forces. Second, for every spoke there is a spoke pulling against it in the next hole, so they are less likely to tear apart the hub flange.