T-budding works very well on peaches and nectarines. Here's EZ's superb tasting nectarine that I T-budded. I am expecting fruits this year!

And of course, the bigger t-budded branch from the same cultivar:


And I always have redundant T-buds per variety, and most of the time both will sprout and fruit for me. Citruses, pomes, stones, and persimmons.

Joe:
I noticed that you T-budded on an old branch(browned bark VS green bark). I know I did it before but is it better to T bud on last years' branch and this years' branch?

it was green bark last year.

T-budding on a green bark is a lot easier and have better chances of take. For darker or brown color, I use bark grafting.