I think this a common topic for us moms, right? :D

Every response was really good and I'm going to take some of these advise for my boys!

Since your son eats baby foods that come from a container, have you thought about putting your own made baby foods in that container? And then perhaps graduate him to more solids in the same container? I don't particularly have this situation with boys, but just a thought. :)

Our friends had an OT come to their home for dinner for feeding therapy. She made a visual schedule showing foods to taste from different categories.(only a few) They probably had something desired at the end. I also heard about tolerating the food on the plate as a first step. This some how related to his physical development but was never obvious until the OT discovered it.

My daughter was like that and it was tough. You can't force them because they won't respond to it. As long as you get him to eat something it is better than nothing. I Agee with the above just put other food items there in front of him and let him see you eating them, eventually he will most likely first feel them , then smell them, and finally taste them. This is going to take a long time let me tell you up front.

Once he gets older and then starts to try new foods what you want to do is have the foods he likes to eat at the table along with the non preferred items. You give him a little of what he wants and then you take it back and give him the other food. You make him try it and if he does you give him more of the preferred item. You make sure he knows he has to try the other items before he gets what he wants. Ultimately you have to give in a little because he has to eat, but keep alternating this technique and eventually you will get there. This is basic ABA you are just using it for food.

This is going to take months most likely so try to be patient as hard as it is, and every time he does eat something different commend him for it. Celebrate the small steps.

Texture, temperature, color and smell can all be issues. Since he is not upset or having a meltdown when offered other food, I would let him eat the baby food but also have other food present. Not necessarily at his place setting but near it. I wouldn't talk about the other food at all, I would have it present and see if he will on his own try it. I also would not make a big deal out of him eating it or touching it if he does. I would also try to figure out what is the issue(temp,texture or smell or color) for us figuring out temperature was an issue was a big deal... I had only thought texture and color. Figuring out temp opened us up to more food items. Our son sits with us for meals and is willing to try foods now, there are some things that are absolutely no, but he has a much larger variety now. And for us tolerating the dinner table and sitting with us was a bigger deal, since those are skills needed as a child gets older and is in school.
Hope that helps, I know feeding issues are complex

I have another thought... What does your son do when others are eating? Or when asked to try another food item? What is his response like?