Ha ha- you beat me to it!
Loquats will grow from seeds. Like most seedling trees, they can take up to 10 years to start fruiting, and may be a bit different to the tree they came from.
Stone fruit will certainly grow from seed. You may not get all of it coming up, and when they fruit, you may get brilliant, useless or anything in between. We're currently eating heaps of white peaches that are from a tree I grew from seed, and they are beautiful, juicy and sweet. I got the first single fruit from a seedling apricot tree this year, but I was afraid the birds would beat me to it and picked it too early, so maybe I'll get a better idea of its flavour next year.
I've also got seedling plums that fruit well. Some sweet-sour yellow cherry plums, a slightly undersized blood plum and assorted other cherry plums. I think plums may have a tendency to revert to smaller fruit, but they still taste fine. Except for a couple of the cherry plum sorts, which I may cut down for firewood and tool handles instead. (Fruit trees often have lovely fine grained hard timber.)
Do you get frosts in your area? Stone fruits grow better if they get a few below zero nights, but may grow anyway.