Here is a neat website that lets you search Twitter for every topic that you are interested in and displays the related Twitter lists.
Go to Tlists and simply enter a related topic of your choice, click on Follow next to the corresponding Twitter lists results that are displayed which will redirect you to Twitter account from where once logged in you can follow them.
Basically it is a search engine for Twitter lists which makes them easy to find and follow.
Happy Twitter list finding 🙂