I know many parents who skip stage 3 and go straight to table foods. I would definitely start to let LO feed himself at least a little bit- try pieces of banana, avocado, clementine, kiwi... basically any fruit/vegetable cut up small would probably be fine at this point. Also try coating veggies in a little bit of olive oil/butter and roasting them... yum. Ground meat too... my LO loves ground beef plain, or I will do a little meatloaf or something for her. Shredded cheese/small pieces of cheese is great.
If you want to do some foods you can spoon feed him, try yogurt, cottage cheese, and applesauce. I peeled and sliced a few apples and put them as is in the crockpot for a couple hours- makes a super easy and delicious chunky applesauce! You could even spoon feed like a mashed up banana or avocado too.