Picky toddler

My son is 18 months old and I am really worried about him and what he eats. Please note that these foods that I list are things that he has actually eaten, but he doesn’t eat them all the time I give them to him.

Yogurt, milk (only when eating cereal)

Bread, cheese, chicken/chicken nugget, fish,

Yogurt, banana, apples, pineapples, mangoes, sausage, peas, cereal (cinnamon toast crunch, trix and cheerios), rice, chicken soup, ramen, French fries, lentil, pumpkin.

I know this might seem like a long list to some, but let me just state that sometimes I give him these things and refuses them. The only thing he never refuses is nuggets, French fries and fruits.