In case you’re not familiar with the term, Gestalt is a whole that is more than the sum of its parts.
Marin named these bikes quite well. These are great bikes that give you more than the component list (or the prices) would suggest.
The Gestalt series aluminum frame is smooth and light (actually a bit lighter and springier than the steel Marin Nicasio or Surly’s Straggler frame). All Gestalts come with a fender and front-rack ready carbon fork. The Gestalt versions that have mechanical (as opposed to hydraulic) brakes rely on the powerful Tekro Spyre models.
All of these bikes feature internal cable runs and the gravel-ready 32mm WTB Exposure tires. In order to keep the prices reasonable, the Gestalt 1 comes with Shimano Sora components. The Gestalt 2 is equipped with a Shimano Tiagra drivetrain and the Gestalt 3 upgrades to hydraulic disc brakes.