I had a DS who would not eat anything. He did not put things in his mouth and would not do the weaning thing 'properly' which was a problem because the HV at the time thought he should be on 3 meals a day at 5 months (he is 22 now!). I used to be under pressure because he was not putting weight on fast enough, then they became utterly chilled about it after a year, when I started to worry!
At his 1st birthday party, he was on a diet of milk and bread sticks and threw his birthday cake on the floor.
At 2, he ate bread, bread sticks, yogurt, fromage frais, bananas orange juice with occasional things like cream cheese on his bread. My (new) health visitor thought this was ok.
I was determined we were not going to end up with him on a diet of chocolate buttons (there was a boy on a Nanny programme like this - but tbh, he would not touch chocolate until about 18mths) used to make home made bread with egg in it (Viennese rolls), cheesy bread. We experimented with spreads and pates with mixed success. We had some success with Apple Charlotte which was like a summer pudding with stewed apple, thickened with egg custard in it. We built on the success with pureed fruit in custard. I started giving him a multivitamin medicine with iron in, after a period of him flopping around and watching television.
He started eating fish fingers at 3, (he went on a playgroup trip with a piece of bread, cold fish fingers and a carton of orange juice) then 'chick sticks' (chicken ones) then I tried making my own things in bread crumbs and that went ok, as long as it was bland textured.
When he started school, he had school dinners because I hoped he would make do with what he was given and try things with the other children. He liked fish and chips, fish cakes, they used to give him mashed potato and cheese as a last resort. His little sisters used to egg him on to eat things like carrots, and sometimes it worked, and sometimes it did. He did gradually start eating more variety.
He did not eat proper meals until he was in his teens. Now, he eats proper meals if I make them, eats far too much crap (crisps and sweets) and is a bit on the thin side. He does have a lot of other problems in his life, though, as he most likely has some undiagnosed ASD problems, which is probably why he was so difficult with his food. He is very stubborn and very good at getting out of doing anything he does not want to do.
I wish I had got him some help when he was younger, because I think the food issues were a sign of other problems, which I could have had help with when he was younger (if it existed.........)