@Olpea and @alan know a lot about late peaches, so I’ll call them out.
Matt has mentioned my late peach standards, here they are in more or less ripening order: Rio Oso Gem (early Sept for me), Oldmixon, O’Henry (9/10), Late Crawford, Indian Free (9/20), Heath Cling, and Salwey. The last two are cooking peaches and I have also been looking at some other varieties to fill in for eating in the late period. I planted August Flame last year, but its listed as rot-prone and I regret planting it (I didn’t notice that fact until after I had the tree planted). It is fruiting this year with a couple peaches, will see how it does. I have been meaning to get Victoria, Alan was very positive on that one. All of the peaches I have above I like a lot, but O’Henry I probably would not plant again as it is very prone to spot damage and it also cracks every couple of years.
PS here is an thread from a few years ago on this topic: