Actually, it's not really a graph, or even a chart, but mediotiempo does have this cool webpage that tracks all the Mexican players in foreign leagues. Yes, the MLS guys, Blanco, Mendoza and Suarez are on that list too.
They even have a spot for Maribel Dominguez, from the women's team.
It would be nice if U.S. Soccer or someplace had such a chart, so at a glance fans could track the progress of their favorite players abroad.
There is this "Global" blog on the U.S. Soccer site, which is pretty good for news and updates, but nothing as nice or easy to look at as mediotiempo's page.
Don't look at me to do a page like this - I'm not very tech-savvy. I'd just like to see someone who is do it. If anyone knows of a page like this, feel free to provide the info in the comments section.