For my daughter, I used to boil things, like green beans, and just mash it with a fork. So it's not pureed but she won't really choke on it. Now she'll eat everything I eat as long as I give her an appropriate size.
Avocado, potatoes white red sweet, peas are good mashed, hard boiled eggs, mashed carrots , steamed tomatoes.
Can puree most things. I even did it with chicken soup I made for myself! Tasted just the same and she loved it. Steamed Broccoli mixed with a little milk or broth is good. Steamed sweet potato puréed with cinnamon. Basically what you eat baby can eat in soft form. Oh, Oatmeal with smashed blueberries and yogurt with smashed berries is a fan favorite
Just no honey, and keep sugar and salt to a minimum
Let him chew on the hard part of a pineapple, or give him a chicken bone tu suck on. Check solidstart they talk about it
Maybe like mashed potatoes