Well, I do need to learn to how to create Euler diagrams. But the big circle is wrestling and then Shuia Jiao, DTQNS, Juijitsu, Judo, BJJ, wrestling and rasslin' are all smaller circles within the big circle of wrestling.
I can go along with the fact they are all some form of grappling which is what I suspect you meant. But they are vastly different. Even freestyle, folkstyle and greco wrestling are fairly different. Your circle reference just screws with my mind. The mat and ring are square and then the octagon thing. Forget the diagrams just speak louder and slower for the prosecutor/admin types.
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Someone else said they mesh fairly well. I am sure that an accomplished wrestler or BJJ guy could switch and switch pretty easily. I am sure elements of both could be blended very usefully for use on the street. I don't know enough about anything other than wrestling (folkstyle,freestyle and Greco) to speak intelligently. But I think one on one the style does not matter so much. I am not sure how useful in a pure form any of them are going to be 2 on 1.
If I can get someone on the ground and then apply a headlock. They are going out. They won't tap for long. If there is more than one it is not going to be a prudent tactic. If I cannot get them down and the lock applied in 30-40 seconds then I need to go another direction as well because I don't have the wind to go seven hard minutes any more. But there was a time.
My understanding, limited as it is, about BJJ is that chokes and locks and things that get called illegal in wrestling are allowed and more common place. Handy one on one, but again I doubt so much 2 on 1 either. Plus in BJJ those guys are so comfortable on the ground and on their back, but if it becomes clear the grappling is not going well cutting and running from on your back is a *****.
I think anyone who trains in these ways and styles are way better off than people who don't. Man or woman. But I also think there is a huge lack of understanding how much size and strength matter. A certain amount of ass will not be over come by technique. I think that strength and size matter even more for women. I think there should be careful consideration before spending large amounts of time and money on something that may not pay off the way you want it to pay off.