Hi MA_NJ.
Tremendous botch of graft.
The first tree has no problems, but the second tree, since the rootstock is bent, should have grafted a little higher so that you could have buried the bent part of the rootstock.
How the graft point is here:
You cannot bury the curved part of the rootstock, since if you bury it deeper, covering the graft point, the grafted variety (the peach tree) will emit roots at the graft point and the qualities of the rootstock will be lost.
Over the years the rootstock will get fat and improve a little, but that steep curve will never be lost.
This does not mean that your tree will be in poor condition, since it will develop perfectly, but it is a botch of graft on the part of the nurseryman.
You have to guide the trees in a metal or wooden tutor, so that they grow straight .
Regards
Jose