Overwhelmed with how much is in the contacts list? Want it to show less or more information? You can do that.
What you want to do first is go to your contacts list and look for the screen options (in the top-right).
When you see it, you want to click on it, and it will show a huge number of columns that you can turn on or off. Unchecking it will not show it in the contacts list.
When you are happy, you can click Apply and the contacts page will update.