All Squrespace templates can be good blog sites, some more so than others possibly. Pacific family was one of the first super scroll templates, a "one page" site desgined for restaurants, retail businesses with menus, lists of services and video banners to show off the place. It is also a good wedding site for both the photographer and the couple.
A blog type, primarily designed to be a blog, is Skye which has a built in multiple listing tweaks. I personally use Avenue for my blog and photographs. .
Here is the skye demo and you can see it is a blog site right out of the box:
https://skye-demo.squarespace.com/
Here is my site which doesn't look much like the original template, which is not a bad thing. I will show you both.
https://avenue-demo.squarespace.com/ it is limited on how to display blog postings until I used summary blocks and changed their appearance with code
my random views
As I said any Squarespace template family, 7.1 or 7.0 can be a good looking blog including Pacific some are geared more to be that than others, so your question was a good one.
It uses the Pacific family template on Squarespace 7.0. The Pacific template family includes Bryler, Charlotte, Horizon, Naomi and Pacific.
Newer templates will have better features, but may not look similar.
