Sorry for the smart ass comment stating the obvious.
I could give some links to standard chain sizes but the standards control the roller size, the spacing between the rollers and the width (or length) of the rollers. In other words, the features necessary to assure the chain will work with the sprockets.
The outside width of the chain isn't really controlled and it is a function of the side plate thickness and the presence of things like O or X-rings.
Each company seems to have their own requirements for the overall width of their chains and most of them don't publish it.
About the only way I can think of that we could get a accurate number for these overall widths would be for our members to measure the pin length over the outside of the outside links and the distance over the riveted ends and tell us what the number is and what company made the chain.
For instance, the standard, non-O-ring Diamond chain, made in India that was on my 2011 G5 from the factory is a #530, .655 over the side plates and .745 over the ends of the rivets.