Do I have a none factory issued rim on my 2009 Express Van? 3 welded / 1 rubber

What is your question?

Recently noticed different valve stem on one of my rims. One being the"flexible" rubber type and the other three appearing to be welded/bolted as if part of the rim. When did manufactures start doing this or is this standard on a 3/4 ton vehicle? Would I have to replace the rim or is this something that can be added to current rim?