Some people grow up listening to good singers and are able to imitate at a very early age. I have known a few singers that were from musical families that grew up listening to Dad and Mom, Grandpa and Grandma singing and playing.
I hear an Open Throat with great tone, lack of strain (even when distorting without killing his voice), great support, range, and natural mods.
If we all sang with the proper methods, none of us would need vocal instruction. Since that is not the case, the rest of us have to learn to sing like that.
You grew up in a family with musical influences, and that may be where some of your natural talent comes from. We all have to find our way from where we are now to where we want to be. Jay sounds very good and very natural with his style.