How to apply different layouts on blog pages

I have 3 different blogs on my site; articles, videos and podcast. I would like to apply a different layout for the podcast blog.
While articles and videos has a layout with 2 columns and 16:9 aspect ratio, I would like the podcast page to have a 3 column and 1x1 aspect ratio layout. 

Can anyone help with a code to achieve this? 

Hi, when in edit mode, if you click on your blog grid, and click Edit Section, a Format menu will pop up. Here you can change the aspect ratio, spacing between items (vertically and horizontally), how many columns, etc Have you tried this?

Let me know how it goes.

@melody495 

Thanks for your answer. When formatting the layout of a single blog page, the settings affects all the other blog pages as well.