How can I find out all of OVO's tariff information?

I’m trying to find out what tariffs OVO is providing and the charges.  I have found the following page on their website but cannot understand it.  There appear to be multiple versions of many of the tariffs that have identical names but different rates.

For example, there are multiple tariffs called ‘Smart Economy 9’ showing different rates and multiple tariffs called ‘Simpler Energy’ showing different rates.  How do I tell which rates would apply to me (NB I have already entered my post code)?

https://plans.ovoenergy.com/