What Plugin is best to modify how categories are displayed

Hello

What plugin will save me from sure death by displaying the category loop full in its entirety, without me having to go and fiddle around for approx 6 months in the code?

What I want is to display the main categories, some of which have a few subcategories, and a customer will click until they narrow themselves down into products. And I want it to look how I want it to while it’s doing its thing.

I can display the main categories ok, with a plugin I’ve found, but the subcategories go back to looking awful and unstyled.

It should work something like https://www.northerntool.com (scroll down, shop by category section)

Please let me know to whom I can throw my money.
Thanks a Bunch!
Jamie