Hello, I have been 3 times with my stock jeep unlimited 2013. I can say that any jeep can handle trails 2, 14, 25 both easy and more difficult, parts of 21, and trail 1 easy.
26 is possible, but be careful, its narrow!
Now you want to stay away from 27 (hardest trail in the park I think), and most of trail 3, and as you seen trail 4.
if you would like to see videos of some of the trails I have them up on youtube. I have them properly labels too! (ran into many mislabeled trails on yourtube)