If you're looking at D500, XT2, and EM1II, I would dare say that you are not very focused on your needs...
All right lets talk about my needs. I am an enthusiast, I don't make money with photography, it is just an (expensive) hobby for me, which I looooove.
My main subject for my photography is my always running (changing directions) and moving his head and never sitting still, 4 year old boy.....
he is almost never still and he is a challenge for most cameras out there
I sold my Sony A7RII - you know the jack of all trades camera, because its AF could not keep up with my child.
Fuji XT1 - could not keep up with him in SAF mode, in CAF mode, if you get the first photo in series in focus, there is a very good chance I would get the entire series in focus, but that was not consistent.
Nikon D800 and D750 - in 3D mode, I get more keepers, but still not a 100% percent keeper rate
Olympus EM1 - SAF - slow, face detect - very bad in comparison to Panasonic, CAF - actually not bad for my child tracking.
Panasonic GX7 - SAF amazing, almost all photos in focus, CAF - disappointing.
Panasonic GX8 - seems to be a tad slower than GX7, but faster than Olympus in SAF with face detection, CAF is not much better than GX7.
Canons through 5DM3 and 6D, 7D and 70D - not as good as Nikon D800 and D750.
All of the above I have tested and used and owned and shot thousands of shots with.
One camera I have not tested is Sony A6300. One problem with Sony is lenses are so freaking expensive.
I love mirorrless for travel. I recenlty left all my big cameras (including A7RII as lenses are huge) and went on two vacations just with m43 and it was such a great feeling, when you can pack 4 lenses in a bag and you don't even feel it!!!!
I hope between D500/A6300/XT2 and EM1M2, there will be a camera with autofocus which will acceptable to me.