AJ is giving good advice.
Just to confuse you a bit I'll thrown in a couple of cents worth.
That last load "looks" the most promising in my eyes.
I see a bit of vertical dispersion but more horizontal dispersion in the first groups.
As AJ said some like hotter and some like it cooler.
Based on the way you are going at it, I'd select the 200gr accubond load with
70.5gr of H4831 seated .035 off the lands.
I'd then, if you have room I'd load 5 with an added grain of powder and another 5 with a grain less. If the dispersion switches from horizontal to vertical somewhere in that range of powder weights is the load that will most closely approach a symmetrical/uniform group.
However, I'm pretty much like AJ, I want all of the velocity that I can get and still be accurate. His method, which I also use, helps find the nodes in about as many shots as you have already shot in those 4 groups.
No sense burning anymore powder and using up barrel life as one needs to, though it is just fun to shoot.
PS: The barrel cleaning question was a hint. Use a good copper remover is another hint.