Maypops, which are a north american species of passionfruit. Obviously not a great hand fruit.

Jujubes. They're like a dryer sweeter small apple. They don't need a lot to grow where I am and there's hundreds per tree.

Persimmons. Have a full size tree about to drop maybe 40 pounds of them. And I have no idea what to do with that many.

Since huckleberries were already mentioned, I'll go for salal berries. Taste like flowery blueberries and make an amazing sauce, especially if you mix them with huckleberries.

Do thimbleberries count? Not sure how local they are to me, but they're so tasty. Think a sweeter, more fragile raspberry. They make an excellent jam! my only complaint I have is how fragile they are, they only last a day or two in the fridge

American Wild Plum

Chokecherry These make your mouth feel furry inside if you eat them, but make the best syrup for pancakes

I don't see it mentioned so maybe it's not lesser known, but jackfruit is amazing. SEA like most amazing fruit but have seen it more often in North America. Fresh, not the prepped and sauced vegan style.

So not in my area, but I recently discovered cloudberry jam, which is absolutely delicious. It's like a mix of citrus and strawberry.

Dwarf raspberry/dewberry. My pop used to call it 'gumbo' for some reason.

Its a tiny little raspberry plant that produces one berry per plant, so its hard to get it in any quantity.

The fruit itself is more juicy than a regular raspberry, and tastes more like fake raspberry flavored candy. Its always a treat to find these while hiking.

I'd also like to mention Sapota.

Honorary mention to Grewia asiatica and Syzygium.

Marian plum. A bit too sour to eat on it's own but a spiced and preserved ones taste pretty damn good.

Ground cherries! They grow so well too.

Arum is an incredbibly underrated veg too, with an amazing texture.