Based on these pictures all of those plants have a minimum of 3-4 weeks left to be properly finished. They are covered in fresh new white pistils, which means the plants are actively growing fresh new buds for you.
I say minimum because there seems to be a few that haven’t even began to mature yet so it’s really too early to even make a call on harvest point. The one plant pictured appears to have more red pistils then the others, and may only need the 3ish weeks I mentioned.