What is the theme this (big) site uses?

What is the theme, and plugins, used to create such site/pages:

Code:
https://www.nerdwallet.com/blog/investing/best-online-brokers-for-stock-trading/
https://www.nerdwallet.com/blog/investing/td-ameritrade-review/
https://www.nerdwallet.com/rates/savings-account

Also the expanding 'Show pros & cons' sections? And the tables (doesn't look like tablepress or anything)?

Is it all one theme? or a combination of theme and plugins? Or is it all custom made?

And how did they display…

What is the theme this (big) site uses?