I want to clear up a small confusion with knots. I had two people think my characters having knots is new to the series with the last chapter, and that's not true.
Dominant males having a knot has been in my series since book one. I don't recall if I mentioned Thaddeus's knot, but I definitely mentioned Michael's on several occasions. Noah whimpered because it hurt when it tugged on him each time Michael moved.
Also, there is a chapter where Asher accidentally knots Michael. I believe that is in the book River Pack. It shocked both Alphas since a dominant mate doesn't normally knot another dominant mate.
Knots are NOT strictly an Alpha thing, either. It's any dominant male when their mate is in heat. If their mate is not in heat, their knot will not bloom.
I can't remember every instance, but I do have this one that wasn't an Alpha. In Harris's book, chapter 79, Brian is a dominant Beta, and he knotted his Omega, River when he went into heat.
Another knotting instance was in Claudius's book. It was when Ethan ran away. Each time Ethan went into heat, Alpha Hughes felt it, and it triggered his rut. He and Claudius were separated at that time, so he was forced to jack off. I mentioned that every time he jacked off, his knot bloomed in his hand. The same thing happened to Claudius during that time as well since he is a dominant Delta 3.
I hope this helps clear everything up with knotting. If anyone has any questions, feel free to ask.