[Q] Difference between these AT&T Unlimited data plans? topic

So I was reading that if you have an Unlimited data plan and get throttled when you reach 5GB you can change your data plan to one of the other unlimited data plan options and you'll stop being throttled for another 5GB. I see that there's two other unlimited data plan options for me on the website. Does anyone know what the actual difference is between these? Has anyone tried what I said? Does it work? Thanks!