My son loves fruit I have given him all kinds.
Blueberries, Raspberries and Blackberrires i just give him whole to eat. I would still consider giving them to your LO even if he doesnt have a pincer grasp because its good practice and you can help him in the end. My son's grasp improved after a week or two of giving him small food to eat (he had it between 7.5 and 8 months).
Pineapple is really good--its better tinned or in those plastic cup because its softer than fresh pineapple, just cut it up really small. If you buy fresh, cut the top off then cut all the outside off it. Then slich the inner part, then finally cut the slices into small pieces.
Strawberries I just cut in half.
Orange and similar types of fruit, peel, seperate all the wedges and then cut the membrane/skin off the wedges with a knife or at least losen it a bit and make the wedges smaller.
Bananas just peel and cut into slices or chunks.
Kiwi fruit, just peel and cut into small pieces.
Mango, cut in half. Remove seeds, then separate all the soft fruit from the hard outer covering and cut into small chunks. Mangos have a hard core in the center so just cut around it.
Watermelon is great just have to remove all the seeds, can either leave the green outbit on for him to hold or remove it and cut it into small pieces.
You can remove skin from peaches/plums by imersing them in boiling water for a minute and then peeling it off. They are slippery to hold and eat so you can leave the skin on if you like.