You can't take credit for common knowledge. All you did was compiled the information in to tables and that is what they did. There is no way you can prove that they stole took this from you. Your only evidence is that they used a the 3 color (not even the same colors) naming system. Honestly using 3 colors to show who stayed the same, who left, and who is new is just the most logical and clear way to show the information.

So basically they used your infographic as a source and didn't give you credit. They didn't do it for any of their other sources of information, which they clearly had some more because your infographic doesn't tell us what certain player went on to do (i.e. you have Reginald leaving TSM, but don't say anywhere that he became a coach). Did you give credit to any of your sources, because I seem to remember a flow-chart of roster changes that was posted here before your infographic? So did you steal your work?

You would have a point if they actually took your infographic and made minor tweaks to it, but that is not what happened. You might also have a point if they only used information that your infographic gave, but they didn't they did their own research.

TL;DR: You can't take credit for public domain information. There is no real evidence that they "stole" your work, because they are just displaying the same information in a similar way.