UPDATE 10/09/17: We just updated the addon to version 2.0! It now works with any theme!
The Shopify customization request I get most often is “can we show all our blogs on one page like WordPress”? Basically, the shop owner wants to use the different blogs in Shopify the same way categories are used in WordPress. All the posts from all blogs would show on one unified blog page with pagination. And the site user can filter the posts by category (Shopify blog) if they want.
I decided to offer the code to other Shopify developers. It is available as a Shopify theme addon + installation service ($125) that we install into your theme for you. It is nondestructively integrated into your existing theme.
It also includes a mosaic grid display of the unified blog page and pagination. See the example image below or test it out on our demo site.