So in the video you can see one of my plants with ...

Healthy plants reach for the light during the day and drop at night. Just a normal part of photosynthesis for a healthy plant. Keep up the good work

The only leaves I see “reaching up” are very healthy they didn’t receive too much water or feed, they are not too dry, and the humidity is perfect. That reaching or “jazz hands” is a very happy plant. And it’s not that the others are not doing as well or have a big problem it’s just they aren’t in that perfect range. Of course too as they get close to finishing the leaves will hang lower naturally. Best of luck moving forward with your grow

It's a sign of light and / or heat stress. It's too close to the light.
Different strains, different tolerance to heat, is that plant just below the bulb? You could try swapping that plant with one at the edges of the tent? if that fails, rise the light