Healthy plants growing up at an angle?

A few of my plants seem to grow at an angle. They are around 18 inches tall. Some plants are growing straight up, some are growing at a slight angle. I added a 48" tower fan on low pointed at the wall but oscillating to add some light wind....The plants never straightened up. I turned them away from the light, and they sill did not straighten up.

All things being equal they look very healthy and are growing well.

I also have some bamboo sticks from the hydro store I picked up just in case.

i wouldnt worry about it.

Some clones think they are a branch and curve. I have grown severe cases of this where the stem on a 20" plant will be bowed out 4" in the center. The bad ones will curve enough to fall over if left alone
Not a problem that needs tracking down, more clones cut from inner branches do this than ends of branches, but these are merely trends. Very few are actually a problem.