CR Laine has a few models that look similar. Here's one called the Raleigh: https://www.crlaine.com/products/sofas/raleigh-sofa.html

This Hancock & Moore one has a similar shape but doesn't have quite the same base: http://www.hancockandmoore.com/Products/4048/Sofas/Scandic-Sofa#

I'll try to think if I can think of a few more brands to look through that might have some higher quality sofas.

@katmumn, thanks for the suggestions! Unfortunately, one of the things we liked about the one in the photo was that the back looks like real cushions but is also attached at the top. We have a beagle that likes to sit on the top and look out the window and we’re trying to avoid ruined/smashed cushions.

As a 2 dog owner myself, I can relate. My family room sofa is like that with the "semi-attached" cushions. Those aren't too easy to find. I'll see if I can find one for you.

Tight back sofa’s are hard to find.. I love them as well.

Did you try Laz-boy we have a sectional that has all the features you are looking for.